Engine ID Number Locations

Engine ID Number Locations:

The eighth digit of the Vehicle Identification Number (VIN) is the engine code letter, which identifies the engine as a 5.7 L 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, as shown.

"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