GM Service Manual Online
For 1990-2009 cars only

Object Number: 1556784  Size: SH

The Vehicle Identification Number - VIN derivative (1) for 3900 LZ8 is stamped or laser etched on the front and left side of the engine block. The Vehicle Identification Number - VIN derivative is nine digits long and can be used to determine if a vehicle contains the original engine.

    • The first digit identifies the division.
    • The second digit identifies the model year.
    • The third digit identifies the assembly plant.
    • The fourth through ninth digits are the last six digits of the Vehicle Identification Number - VIN.