GM Service Manual Online
For 1990-2009 cars only
Table 1: VIN Derivative
Table 2: VIN Positions

VIN Derivative

Position

Definition

Character

Description

DEFINITION: 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:

1

GM Division Identifier

4

Buick

2

Model Year

4

2004

3

Assembly Plant

4

Orion, MI

4-9

Plant Sequence Number

000001

Plant Sequence Number

VIN Positions

VIN Derivative Position

Equivalent VIN Position

Definition: A VIN derivative can be used to determine if a vehicle contains the original engine or transmission, by matching the VIN derivative position to the corresponding position in the complete VIN:

1

3

2

10

3

11

4-9

12-17