Engine

Engine ID Number Locations:

The eighth digit of the vehicle identification number (VIN) is the engine code letter, which identifies the engine as a 5.7L V8 (VIN eighth digit: G) (RPO code LS1).

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

The engine ID number will be located in either the primary or the secondary location.

Engine VIN Derivative Locations:

The engine is also stamped with a VIN derivative number which will be located in either the primary or secondary location, as shown. For additional information, refer to VIN Derivative.

For a description of the RPO Code(s) shown in this article/image, refer to the RPO Code List found at Vehicle/Application ID. RPO Codes