GM Service Manual Online
For 1990-2009 cars only

All engines and transaxles are stamped with a partial Vehicle Identification Number (VIN). The following table identifies the different VIN derivative characters, character positions, and their respective descriptions:

VIN Derivative Table

Position

Definition

Character

Description

1

Division

1

2

Chevrolet

Pontiac

2

Model Year

W

1998

3

Plant Location

M

7

S

Lansing, MI

Lordstown, OH

Ramos Arizpe, MEX

4-9

Plant Sequence Number

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