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

3

Chevrolet

Oldsmobile

2

Model Year

W

1998

3

Plant Location

4

6

Wilmington, DE

Oklahoma City, OK

4-9

Plant Sequence Number

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