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Model Identification

MODEL IDENTIFICATION

MODEL BODYCODE (1) ENGINE ENG. ID FUEL SYSTEM IGNITION SYSTEM
Astro & Safari M, L 4.3L (L35) W CSI (2) Magnetic (3)
Lumina Van, Silhouette & Trans Sport U 3.4L (LA1) E SFI Magnetic
Parcel/Delivery Commercial Van & Motorhome(P3,P/G3) P 4.3L (L35) W CSI (2) Magnetic
Parcel/Delivery Commercial Van & Motorhome(P3,P/G3) P 5.7L (L31) R CSI (2) Magnetic
Parcel/Delivery Commercial Van & Motorhome(P3,P/G3) P 6.5L (L65)(4) F Turbo Diesel N/A
Parcel/Delivery Commercial Van & Motorhome(P3,P/G3) P 7.4L (L29) J CSI (2) Magnetic
Pickup (C/K 1/2/3) & Sierra C, K 4.3L (L35) W CSI (2) Magnetic
Pickup (C/K 1/2/3) & Sierra C, K 5.0L (L30) M CSI (2) Magnetic
Pickup (C/K 1/2/3) & Sierra C, K 5.7L (L31) R CSI (2) Magnetic
Pickup (C/K 1/2/3) & Sierra C, K 6.5L (L65)(4) F Turbo Diesel N/A
Pickup (C/K 1/2/3) & Sierra C, K 6.5L (L49)(5) P Diesel N/A
Pickup (C/K 1/2/3) & Sierra C, K 6.5L (L56)(4) S Turbo Diesel N/A
Pickup (C/K 1/2/3) & Sierra C, K 7.4L (L29) J CSI (2) Magnetic
Suburban (C/K 1/2) C, K 5.7L (L31) R CSI (2) Magnetic
Suburban (C/K 1/2) C, K 6.5L (L65)(4) F Turbo Diesel N/A
Suburban (C/K 1/2) C, K 7.4L (L29) J CSI (2) Magnetic
S/T Series:Blazer,Bravada, Jimmy, Pickup, Sonoma, S, T 2.2L (LN2)(6) 4 SFI Magnetic
S/T Series:Blazer,Bravada, Jimmy, Pickup, Sonoma, S, T 4.3L (L35) W CSI (2) Magnetic (3)
S/T Series:Blazer,Bravada, Jimmy, Pickup, Sonoma, S, T 4.3L (LF6) X CSI (2) Magnetic (3)
Tahoe & Yukon C, K 5.7L (L31) R CSI (2) Magnetic
Tahoe & Yukon C, K 6.5L (L56)(4) S Turbo Diesel N/A
Van (G 1/2/3) G 4.3L (L35) W CSI (2) Magnetic
Van (G 1/2/3) G 5.0L (L30) M CSI (2) Magnetic
Van (G 1/2/3) G 5.7L (L31) R CSI (2) Magnetic
Van (G 1/2/3) G 6.5L (L49)(5) P Diesel N/A
Van (G 1/2/3) G 7.4L (L29) J CSI (2) Magnetic
(1) Engine code is stamped on engine block. See ENGINE CODE LOCATION .
(2) Central Sequential Port Injection (CSI).
(3) Uses Enhanced Electronic Ignition (OBD-II), utilizing a camshaft and crankshaft position sensor.
(4) Heavy Duty emissions.
(5) Light Duty emissions.
(6) 2WD only.
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