Engine Identification
WARNING: This page does not describe the selected car, but rather 55 other vehicles, including the 1999 Oldsmobile Bravada, 1999 GMC Yukon, 1999 GMC Suburban, 1999 GMC Sonoma, and 1999 GMC Sierra. However, it is still accessible from the selected car via links, so may be relevant.
Engine is identified by eighth character of Vehicle Identification Number (VIN). VIN is stamped on a metal plate on the top left end of the instrument panel, near windshield. See ENGINE IDENTIFICATION CODES table.
Engine can also be identified by engine identification (ID) number. Number is stamped on front of cylinder block, immediately forward of right cylinder head or on left side of cylinder block, on engine-to-transmission mating flange.
ENGINE IDENTIFICATION CODES
| Engine | (1) VIN Code | Engine ID | |||
|---|---|---|---|---|---|
| 4.3L | |||||
| SFI | W | L35 | |||
| SFI | X | LF6 | |||
| 5.0L SFI | M | L30 | |||
| 5.7L SFI | R | L31 | |||
| 7.4L SFI | J | L29 | |||
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NOTE:
In this article, references to Express and Savana also apply to 1998 G-Van.