GM Service Manual Online
For 1990-2009 cars only

Position

Definition

Character

Description

All engines and transmissions are stamped with a partial Vehicle Identification Number (VIN). This table identifies the different VIN derivative characters and their respective positions.

1

Make

7

Pontiac

2

Model Year

3

2003

3

Assembly Plant

S

Ramos Arizpe, Mexico

4-9

Production 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

3

2

10

3

11

4-9

12-17