FixVault

Model Identification

NOTE: The following conditions must be met before testing: Engine at operating temperature, Engine in closed loop operation, Engine idling ("Engine Run" column), Test terminal NOT grounded, and Scanner or ALDL tool NOT installed.

Repair procedures in this article are sometimes identified by a specific body code. The following table lists GM division, model name, and body types that apply to the body codes.

MODEL IDENTIFICATION & ENGINE APPLICATIONS

Body & GM Division Model Name Engine, FUEL (VIN)
"A" Body
Buick Century 2.5L 4-Cyl. TBI (R)
Buick Century 2.8L V6 MFI (W)
Buick Century 3.8L V6 SFI (3)
Chevrolet Celebrity 2.5L 4-Cyl. TBI (R)
Chevrolet Celebrity 2.8L V6 MFI (W)
Oldsmobile Cutlass Ciera 2.8L V6 MFI (W)
Oldsmobile Cutlass Ciera 3.8L V6 SFI (3)
Oldsmobile Cutlass Cruiser 2.8L V6 MFI (W)
Oldsmobile Cutlass Cruiser 3.8L V6 SFI (3)
Pontiac 6000 2.5L 4-Cyl. TBI (R)
Pontiac 6000 2.8L V6 MFI (W)
Pontiac 6000 3.1L V6 MFI (T)
"J" Body
Buick Skyhawk 2.0L 4-Cyl. TBI (1)
Buick Skyhawk 2.0L 4-Cyl. TBI (K)
Cadillac Cimarron 2.8L V6 MFI (W)
Chevrolet Cavalier 2.0L 4-Cyl. TBI (1)
Chevrolet Cavalier 2.8L V6 MFI (W)
Oldsmobile Firenza 2.0L 4-Cyl. TBI (1)
Oldsmobile Firenza 2.0L 4-Cyl. TBI (K)
Pontiac Sunbird 2.0L 4-Cyl. TBI (K)
Pontiac Sunbird 2.0L 4-Cyl. MFI (M)
"N" Body
Buick Skylark 2.3L 4-Cyl. MFI (D)
Buick Skylark 2.5L 4-Cyl. TBI (U)
Buick Skylark 3.0L V6 MFI (L)
Buick Skylark Somerset 2.0L 4-Cyl. TBI (K)
Buick Skylark Somerset 2.5L 4-Cyl. TBI (U)
Buick Skylark Somerset 3.0L V6 MFI (L)
Buick Somerset Regal 2.0L 4-Cyl. TBI (K)
Buick Somerset Regal 2.5L 4-Cyl. TBI (U)
Buick Somerset Regal 3.0L V6 MFI (L)
Oldsmobile Cutlass Calais 2.3L 4-Cyl. MFI (D)
Oldsmobile Cutlass Calais 2.5L 4-Cyl. TBI (U)
Oldsmobile Cutlass Calais 3.0L V6 MFI (L)
Pontiac Grand Am 2.0L 4-Cyl. MFI (M)
Pontiac Grand Am 2.3L 4-Cyl. MFI (D)
Pontiac Grand Am 2.5L 4-Cyl. TBI (U)
"P" Body
Pontiac Fiero 2.5L 4-Cyl. TBI (R)
Pontiac Fiero 2.8L V6 MFI (9)