Use an Internet VIN decoder to find the engine specifications for your truck. Some of the more popular truck engine codes are C for a 6.2 diesel, F for 5.0 gasoline engine, R for a 5.7, and W for a 4.3. Engine combinations vary for each model and year. The number 3 is for a four-door cab, 4 for a two-door cab, 6 for a Suburban, 7 for a Motor Home chassis, 8 for a two-door sport utility, 9 for an extended cab, and 0 for a chassis only.įind the type of engine used with the eighth character.

Identify the body type through the seventh character. The number 1 is used for a 1500, 2 for a 2500, 3 for a 3500, 4 for a ½ ton heavy duty, 5 for a 3 ton GMC, 6 for a ½ ton Luxury 1500, 7 for a ¾ ton Luxury 2500, and 8 for a 1 ton Luxury 3500. B is for an incomplete vehicle, C for a 4x2 full-size pickup, E for a 4x2 compact pickup, H for a cutaway chassis, J for a 4x4 compact pickup, K for a 4x4 full-size pickup, P for a forward control chassis, R for a 4x2 full-size pickup, S for a 4x2 sport-utility, T for a 4x4 sport-utility, U for a 4x2 all-purpose vehicle, V for a 4x4 full-size pickup, W for a Chevrolet El Camino, and X for a 4x4 all-purpose vehicle.Ĭharacter No. The type of chassis comes from fifth character.

Gross Vehicle Weight Rating, or GVWR, is revealed by the fourth character. Other GM codes are 2 for Pontiac, 3 for Oldsmobile, 4 for Buick, 6 for Cadillac, and 8 for Saturn. The letter G is assigned to a General Motors vehicle.

Gmc vin engine code