GM Service Manual Online
For 1990-2009 cars only

Engine ID and VIN Derivative Location RPO LX5 V-6

The eighth character in the Vehicle Identification Number (VIN) identifies the engine. Adhesive-backed labels attached to the engine, laser etching or stampings on the engine block indicate the engine unit number/date code. All engines are stamped with a VIN derivative. For more information on the VIN derivative, refer to VIN Derivative .


Object Number: 758144  Size: SH

The primary location of the VIN derivative for the 3.5L Twin Cam V6 LX5 (VIN H) engine is on the front end of the LH rocker cover (1).

Engine ID and VIN Derivative Location RPO L47 V-8


Object Number: 758152  Size: SH

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

Stick-on labels attached to the engine, laser etching, or stampings in the engine block indicate the engine unit number/build code date. All engines are stamped with a VIN derivative. For more information on the VIN derivative, refer to VIN Derivative .

The engine ID number will be located on the end surface of the cam cover (1), and the VIN derivative is located on the engine block in front of the transaxle extension (2), as shown.