GM Service Manual Online
For 1990-2009 cars only

Object Number: 65474  Size: SH

Vehicle Identification Number (VIN) System

The vehicle identification number (VIN) plate (1) is the legal identifier of the vehicle. The VIN plate is located on the upper left corner of the instrument panel (I/P) and can be seen through the windshield from the outside of the vehicle.

Position

Definition

Character

Description

1

Country of Origin

1

USA

2

Manufacturer

G

General Motors

3

Make

6

Cadillac

4

5

Carline/Series

6DM

6DN

6DR

CTS

CTSI

CTS, RHD

6

Body Style

5

Sedan-4 Door, 4 Window, Notchback,

7

Restraint System

7

Active Manual Belts W/Driver and Passenger Supplemental Inflatable Restraint Frontal and Side

8

Engine Type

T

7

S

RPO LP1, 2.8L, V6, DOHC, SFI

RPO LY7, 3.6L, V6, SFI

RPO LS6, 5.7L, V8, HO, SFI

9

Check Digit

Varies

Check Digit

10

Model Year

5

2005

11

Plant Location

B

Lansing, MI.

12-17

Plant Sequence Number

--

100001

VIN Derivative Characters

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

Division

6

Cadillac

2

Model Year

5

2005

3

Plant Location

B

Lansing, MI.

4-9

Plant Sequence Number

--

100001

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 Positions

VIN Derivative Position

Equivalent VIN Position

1

3

2

10

3

11

4-9

12-17

5L40-E/5L50-E M82 Transmission ID and VIN Derivative Location

Refer to Transmission Identification Information in Automatic Transmission - 5L40-E/5L50-E.

2.8L LP1/3.6L LY7 Engine ID and VIN Derivative Locations

Refer to Engine Identification in Engine Mechanical - 2.8L (LP1) and Engine Identification in Engine Mechanical - 3.6L (LY7).

2.8L LP1/3.6L LY7 Engine Verification/Traceability Label

Refer to Engine Identification in Engine Mechanical - 2.8L (LP1) and Engine Identification in Engine Mechanical - 3.6L (LY7).

5.7L LS6 Engine ID and VIN Derivative Locations

Refer to Engine Identification in Engine Mechanical - 5.7L .