GM Service Manual Online
For 1990-2009 cars only

Vehicle Identification Number

The Vehicle Identification Number (VIN) Derivative is located in two places on the engine and is a nine digit number stamped or laser etched onto the block at the vehicle assembly plant. If reading the identification number the following information can be obtained:

    • The first digit identifies the vehicle division.
    • The second digit is 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).

Object Number: 1394245  Size: SH

The engine block is marked with the VIN on a pad area on the left rear side (1).


Object Number: 1394248  Size: SH

The engine block is marked with the VIN on a pad area on the center lower right side (1).

Engine Traceability Label

The engine traceability label is located in two places on the engine and consists of the broadcast code, bar code and sequence number.


Object Number: 945245  Size: SH

One engine traceability label (1) is located on the left rear side of the engine block.


Object Number: 945253  Size: SH

Another engine traceability label (1) is located on the rear of the left cylinder head.

Engine Verification Label

The engine verification label is located in two places on the engine and consists of the broadcast code and bar code.


Object Number: 945249  Size: SH

One engine verification label (1) is located on the left side of the engine front cover below the exhaust camshaft position sensor.


Object Number: 945252  Size: SH

Another engine verification label (1) is located on the rear of the right cylinder head.