GM Service Manual Online
For 1990-2009 cars only

Engine ID and VIN Derivative Location Base


Object Number: 200657  Size: SF

The engine code letter is the eight digit of the VIN, which identifies the engine.

Stick-on labels attached to the engine, laser etching, or scamping in the engine block indicate the engine unit number/build code date.

The engine ID number will be located on the engine block on the transaxle extension (2), and the VIN derivative is located on the front of the engine block (1), the optional location (3) is on the front of the engine block as shown.