Fig. Fig. 1 A thirteen digit VIN code is used on 1974-80 vehicles
Fig. Fig. 2 Beginning in 1981 vehicles, a seventeen digit VIN code was utilized
Fig. Fig. 3 The VIN code plate is visible through the driver's side of the windshield
The Vehicle Identification Number (VIN) is important for ordering parts and for servicing. The VIN is a thirteen digit (1974-1980) or seventeen digit (1981 and later) sequence of numbers and letters visible on a plate fastened to the upper left instrument panel area.
Model years appear in the VIN as the last digit of each particular year (6 is 1976, 8 is 1978, etc.), until 1980 (which is A). This is the final year under the thirteen digit code. The seventeen digit VIN begins with 1981(B) and continues 1982(C), 1983(D), etc.
Fig. Fig. 4 Engine identification number label locations-231 and 250 cu. in. V6 engines shown
Fig. Fig. 5 Location of the early model V6 engine ID number location-1977 vehicle shown
Fig. Fig. 6 Engine VIN locations-265, 301, 305 and code L 350 engines
Fig. Fig. 7 Engine identification number locations-VIN code F, N, R and K engines. The Pontiac and Olds built engine number is stamped on the oil filler tube
Fig. Fig. 8 Location of the engine identification numbers-151 4-cylinder and 250 6-cylinder engines
The engine identification number may be located in one of a few different locations, depending on engine. Please refer to the accompanying illustrations for specifics.