For 1990-2009 cars only
All engines and transmissions are stamped or laser etched with a partial Vehicle Identification Number (VIN), which was derived from the complete VIN. A VIN derivative contains the following nine positions:
Position | Definition | Character | Description |
|---|---|---|---|
1 | GM Division Identifier | G | General Motors |
2 | Model Year | 4 | 2004 |
3 | Assembly Plant | B X | Baltimore, MD E.E.M.S. |
4-9 | Plant Sequence Number | -- | Plant Sequence Number |
A VIN derivative can be used to determine if a vehicle contains the original engine or transmission, by matching the VIN derivative positions to their accompanying positions in the complete VIN:
VIN Derivative Position | Equivalent VIN Position |
|---|---|
1 | 2 |
2 | 10 |
3 | 11 |
4-9 | 12-17 |
