GM Service Manual Online
For 1990-2009 cars only

Object Number: 153729  Size: SH

The vehicle identification number (VIN) plate is the legal identifier of the vehicle. The VIN plate is located on the upper LH corner of the instrument panel. The VIN number can be seen through the windshield from the outside of the vehicle:

Vehicle Identification Number (VIN) System

Position

Definition

Character

Description

1

Country of Origin

1

2

United States

Canada

2

Manufacturer

G

General Motors

3

Make

B

C

D

T

Chevrolet Incomplete

Chevrolet Truck

GMC Incomplete

GMC Truck

4

GVWR/Brake System

E

F

G

H

J

6001-7000/Hydraulic

7001-8000/Hydraulic

8001-9000/Hydraulic

9001-10000/Hydraulic

10001-14000/Hydraulic

5

Truck Line/Chassis Type

C

K

4x2

4x4

6

Series

1

2

6

Half Ton Nominal

¾ Ton Nominal

1/2 Ton Luxury

7

Body Type

3

4

9

Four-Door Crew Cab or Utility

Two-Door Cab

Extended Cab

8

Engine Type

X

V

Z

T

U

N

1

G

4.3L V6 MFI (LU3)

4.8L V8 MFI (LR4)

5.3L V8 MFI (L59)

5.3L V8 MFI (LM7)

6.0L V8 MFI (LQ4)

6.0L V8 MFI (LQ9)

6.6L V8 DSL (LB7)

8.1L V8 MFI (L18)

9

Check Digit

--

Check Digit

10

Model Year

3

2003

11

Plant Location

1

E

F

Z

G

Oshawa, Ontario

Pontiac, Michigan

Flint, Michigan

Fort Wayne, Indiana

Silao

12-17

Plant Sequence Number

--

Plant Sequence Number