Engine Identification

Fig 1: Locating Engine Identification Number

Courtesy of GENERAL MOTORS COMPANY

The vehicle identification number (VIN) is located on the left side rear of the engine block (1) and is typically a 9 digit number stamped or laser-etched onto the engine at the vehicle assembly plant.

• 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 6 digits of the VIN.

Engine identification can also be made through use of the Engine Traceability label (2) on the rear of the left cylinder head.

Fig 2: Engine Traceability Label

Courtesy of GENERAL MOTORS COMPANY

1. Broadcast Code
2. Machine Readable 2D Matrix
3. VPPS Code
4. Part Sequence Number
5. Reserved use
6. Broadcast Code
7. Model year
8. Julian Date
9. Build Year
10. Shift ID
11. Plant ID
12. GM Part Number
13. Plant DUNS Number
14. Sequence Number
15. RPO/Engine Family Code