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 .
3100 VIN M Engine
The primary location (1) and the secondary location (2) of the VIN derivative for the 3100 L82 engine is on the engine block above the starter motor.
The primary location (1) and the secondary location (2) for the Engine ID for the 3100 L82 engine are as shown.
3.8L VIN Engine Location, L36/L67
The primary location (1) of the VIN derivative for the 3800 L36 and L67 engine is on the engine block above the starter motor.
The secondary location (1) of the VIN derivative for the 3800 L36 and L67 engine is on the engine block below the water pump.
The primary location (1) of the Engine ID for the 3800 L36 engine is the center of the LH rocker arm or LH side of the engine in the oil pan rail area of the engine.
