Engine ID and VIN Derivative Location RPO L36

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 added information on VIN derivative, refer to VIN Derivative .

The primary location of the VIN derivative for the 3800 engine is above the starter motor on the engine block (1).

The secondary location of the VIN derivative for the 3.8 L engine is below the water pump on the engine block (1).

The location for the 3.8 Liter engine identification is in the center of the LH rocker arm or LH side of the engine in the oil pan rail area of the engine. (1)

Engine ID and VIN Derivative Location RPO LS1

(1)	Engine ID Number, Primary Location
(2)	Engine ID Number, Secondary Location

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

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

The engine ID number will be located at either the primary or the secondary location on the rear of LH cylinder head or the front part of LH oil pan rail.

Engine VIN Derivative Locations