October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Engine Code Explanation

General Motors engines may be identified by the fifth digit of the Vehicle Identification Number (VIN) located on left upper side of instrument panel. Number is visible from outside windshield. An additional identification code number identifies emission control equipment for a specific engine size and application.