GM Service Manual Online
For 1990-2009 cars only

Vehicle Identification Number

The Vehicle Identification Number (VIN) Derivative is located in one place on the engine and is a seventeen digit number stamped or laser etched onto the block at the vehicle assembly plant. If reading the identification number the following information can be obtained:

    • The first three digits identify the vehicle make.
    • The fourth digit is the vehicle line.
    • The fifth digit identifies the chassis type.
    • The sixth and seventh digits are the grade type.
    • The eighth digit is the engine.
    • The ninth digit is a check digit.
    • The tenth digit is the model year.
    • The eleventh digit is the manufacturing plant.
    • The twelfth to seventeenth digits are the serial number.

Object Number: 1875902  Size: SH

The engine block is marked with the VIN on a pad area on the left rear side (1).

Engine Plant Sequence Number


Object Number: 1875902  Size: SH

The engine plant sequence number is located in one place on the engine.

Engine Barcode Description

Position

Definition

Character

Description

Engine Barcode Description

The Engine Barcode format is 10XXX-XXXXXXXXX, totaling 15 characters.

1-2

Flex ID

10

Component ID

3-5

Broadcast Code

BWD

Broadcast Code

6

Hyphen

--

Hyphen

7-13

Serial Number

--

Serial Number

14-15

Blank

--

Intentionally Blank