03-06 GM Truck Four Wheel Drive Selector Switch w/Rpo Code Np1 w/o Auto Shift 07 Pickup Classic

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Reference Numbers
Part Number	1984-3003,
OEM	15136040, 19259312,
SMP	TCA-50,
WELLS	SW8267,

Dimensions
4.5" x 4.5" x 3.5" 0.30 lbs

Applications
2003 - 2006	Chevrolet	Avalanche 1500
Select Year for Details	Chevrolet	Avalanche 1500
2003	Chevrolet	Avalanche 1500
Base Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
North Face Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
On Road Edition Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WBH Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WBH Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2004	Chevrolet	Avalanche 1500
Base Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z66 Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2005	Chevrolet	Avalanche 1500
Base Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z66 Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2006	Chevrolet	Avalanche 1500
LS Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z66 Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z66 Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2003 - 2006	Chevrolet	Silverado 1500
Select Year for Details	Chevrolet	Silverado 1500
2003	Chevrolet	Silverado 1500
Base Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2004	Chevrolet	Silverado 1500
Base Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Hybrid Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 ELECTRIC/GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Hybrid Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 ELECTRIC/GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SS Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Crew Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2005	Chevrolet	Silverado 1500
Base Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Hybrid Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 ELECTRIC/GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Hybrid Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 ELECTRIC/GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2006	Chevrolet	Silverado 1500
Hybrid Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 ELECTRIC/GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Hybrid Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 ELECTRIC/GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SS Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2007	Chevrolet	Silverado 1500 Classic
Hybrid Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 ELECTRIC/GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Hybrid Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 ELECTRIC/GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SS Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2003 - 2006	Chevrolet	Silverado 2500 HD
Select Year for Details	Chevrolet	Silverado 2500 HD
2003	Chevrolet	Silverado 2500 HD
Base Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2004	Chevrolet	Silverado 2500 HD
Base Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
2005	Chevrolet	Silverado 2500 HD
Base Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
2006	Chevrolet	Silverado 2500 HD
LS Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
2007	Chevrolet	Silverado 2500 HD Classic
LS Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
2003 - 2006	Chevrolet	Silverado 3500
Select Year for Details	Chevrolet	Silverado 3500
2003	Chevrolet	Silverado 3500
Base Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
2004	Chevrolet	Silverado 3500
Base Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2005	Chevrolet	Silverado 3500
Base Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
2006	Chevrolet	Silverado 3500
LS Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
2007	Chevrolet	Silverado 3500 Classic
LS Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LS Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
LT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
2003 - 2006	Chevrolet	Suburban 1500
Select Year for Details	Chevrolet	Suburban 1500
2003	Chevrolet	Suburban 1500
LS Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2004	Chevrolet	Suburban 1500
LS Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2005	Chevrolet	Suburban 1500
LS Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2006	Chevrolet	Suburban 1500
Base Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2003 - 2004	Chevrolet	Tahoe
Select Year for Details	Chevrolet	Tahoe
2003	Chevrolet	Tahoe
LS Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Sport Utility 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Sport Utility 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2004	Chevrolet	Tahoe
LS Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Sport Utility 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LS Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
LT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Sport Utility 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Z71 Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2003 - 2006	GMC	Sierra 1500
Select Year for Details	GMC	Sierra 1500
2003	GMC	Sierra 1500
Base Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2004	GMC	Sierra 1500
Base Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2005	GMC	Sierra 1500
Base Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Denali Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Hybrid Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 ELECTRIC/GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Hybrid Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 ELECTRIC/GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2006	GMC	Sierra 1500
Denali Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Hybrid Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 ELECTRIC/GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Hybrid Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 ELECTRIC/GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Crew Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Crew Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2007	GMC	Sierra 1500 Classic
Hybrid Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 ELECTRIC/GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Hybrid Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 ELECTRIC/GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Crew Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2003 - 2006	GMC	Sierra 2500 HD
Select Year for Details	GMC	Sierra 2500 HD
2003	GMC	Sierra 2500 HD
Base Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
2004	GMC	Sierra 2500 HD
Base Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2005	GMC	Sierra 2500 HD
Base Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
2006	GMC	Sierra 2500 HD
SL Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SL Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SL Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SL Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
2007	GMC	Sierra 2500 HD Classic
SL Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SL Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SL Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
2003 - 2006	GMC	Sierra 3500
Select Year for Details	GMC	Sierra 3500
2003	GMC	Sierra 3500
Base Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
2004	GMC	Sierra 3500
Base Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
2005	GMC	Sierra 3500
Base Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
Base Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.0L 364 Cu. In. V 8 CNG OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
2006	GMC	Sierra 3500
SL Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SL Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SL Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SL Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
2007	GMC	Sierra 3500 Classic
SL Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SL Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SL Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SL Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SL Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SL Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SL Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLE Standard Cab Pickup 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
SLT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 2-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Cab & Chassis 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Crew Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
WT Extended Cab Pickup 4-Door	6.6L 403 Cu. In. V 8 DIESEL OHV Turbocharged	With Electronic Shift RPO Code NP1 ONLY
2003 - 2004	GMC	Yukon
Select Year for Details	GMC	Yukon
2003	GMC	Yukon
SLE Sport Utility 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Sport Utility 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2004	GMC	Yukon
SLE Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Sport Utility 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Sport Utility 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	4.8L 294 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2003 - 2006	GMC	Yukon XL 1500
Select Year for Details	GMC	Yukon XL 1500
2003	GMC	Yukon XL 1500
SLE Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2004	GMC	Yukon XL 1500
SLE Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2005	GMC	Yukon XL 1500
SLE Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
2006	GMC	Yukon XL 1500
SL Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SL Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLE Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 GAS OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY
SLT Sport Utility 4-Door	5.3L 325 Cu. In. V 8 FLEX OHV Naturally Aspirated	With Electronic Shift RPO Code NP1 ONLY