Engine ID and VIN Derivative Location

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.

Fig 1: Engine ID & VIN Derivative Location (4.8L, 5.3L & 6.0L)

Courtesy of GENERAL MOTORS CORP.