GM Service Manual Online
For 1990-2009 cars only
Table 1: Ambient Light Sensor
Table 2: Ashtray Lamps
Table 3: Backup Lamp - Left
Table 4: Backup Lamp - Right
Table 5: Center High Mounted Stop Lamp (CHMSL)
Table 6: Cornering Lamp - Left
Table 7: Cornering Lamp - Right
Table 8: Courtesy/Reading Lamps - Front
Table 9: Courtesy/Reading Lamps - Rear
Table 10: Courtesy/Reading Lamp Switches - Front
Table 11: Courtesy/Reading Lamp Switches - Rear
Table 12: Fog Lamps
Table 13: Footwell Courtesy Lamps
Table 14: Hazard Flasher
Table 15: Headlamp Dimmer Switch
Table 16: Headlamp Switch C1
Table 17: Headlamp Switch C2
Table 18: Headlamp - Low Beam - Left
Table 19: Headlamp - Low Beam - Right
Table 20: Headlamp - High Beam - Left
Table 21: Headlamp - High Beam - Right
Table 22: I/P Compartment Lamp
Table 23: License Lamps
Table 24: Marker Lamps - Front
Table 25: Marker Lamps - Rear
Table 26: Park/Turn Signal Lamps - LF
Table 27: Park/Turn Signal Lamps - RF
Table 28: Rear Compartment Lamp
Table 29: Stop Lamp/AT Shift Lock Control Switch C1
Table 30: Stop Lamp/AT Shift Lock Control Switch C2
Table 31: Stop Lamp Switch
Table 32: Tail/Stop and Turn Signal Lamp - Left
Table 33: Tail/Stop and Turn Signal Lamp - Right
Table 34: Turn Signal Flasher Module
Table 35: Underhood Lamp
Table 36: Vanity Mirror - Left and Right

Ambient Light Sensor


Object Number: 258623  Size: CH

Connector Part Information

    • 06288733
    • 2-Way Non-Packard (BRN)

Pin

Wire Color

Circuit No.

Function

A

WHT

278

Ambient Light Sensor Signal

B

BLK

279

Ambient Light Sensor Low Reference

Ashtray Lamps


Object Number: 38556  Size: CH

Connector Part Information

    • 12124722
    • Bulb Base Type W-2 (LT GRY)

Pin

Wire Color

Circuit No.

Function

A

GRY

8

Instrument Panel Lamp Supply Voltage-1

B

BLK

850

Ground

Backup Lamp - Left


Object Number: 306271  Size: CH

Connector Part Information

    • 12089348
    • Bulb Base Type C-2, RT angle (GRY)

Pin

Wire Color

Circuit No.

Function

A

LT GRN

24

Backup Lamp Supply Voltage

B

--

--

Not Used

G

BLK

1150

Ground

Backup Lamp - Right


Object Number: 306271  Size: CH

Connector Part Information

    • 12089348
    • Bulb Base Type C-2, RT angle (GRY)

Pin

Wire Color

Circuit No.

Function

A

LT GRN

24

Backup Lamp Supply Voltage

LT GRN

24

Backup Lamp Supply Voltage

B

--

--

Not Used

G

BLK

1150

Ground

Center High Mounted Stop Lamp (CHMSL)


Object Number: 295470  Size: CH

Connector Part Information

    • 8911772
    • 2-Way F Pack-Con (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

20

Stop Lamp Supply Voltage

B

BLK

1250

Ground

Cornering Lamp - Left


Object Number: 812610  Size: CH

Connector Part Information

    • 12010804
    • B1 Bulb Base (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN

57

Left Cornering Lamp Supply Voltage

G

BLK

750

Ground

Cornering Lamp - Right


Object Number: 812610  Size: CH

Connector Part Information

    • 12010804
    • B1 Bulb Base (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN

58

Right Cornering Lamp Supply Voltage

G

BLK

750

Ground

Courtesy/Reading Lamps - Front


Object Number: 258679  Size: CH

Connector Part Information

    • 12124065
    • LP Soc Wge Bse

Pin

Wire Color

Circuit No.

Function

A

ORN

640

Battery Positive Voltage

B

WHT

156

Courtesy Lamp Low Control

Courtesy/Reading Lamps - Rear


Object Number: 258679  Size: CH

Connector Part Information

    • 12124065
    • LP Soc Wge Bse

Pin

Wire Color

Circuit No.

Function

A

ORN

640

Battery Positive Voltage

B

WHT

156

Courtesy Lamp Low Control

Courtesy/Reading Lamp Switches - Front


Object Number: 333035  Size: CH

Connector Part Information

    • 12124834
    • 3 Way Metri-Pack Series (WHT)

Pin

Wire Color

Circuit No.

Function

A

BLK

1250

Ground

B

WHT

156

Courtesy Lamp Low Control

C

DK BLU/WHT

1495

Interior Lamp Control

Courtesy/Reading Lamp Switches - Rear


Object Number: 333035  Size: CH

Connector Part Information

    • 12124836
    • 3 - Way Metri-Pack Series (WHT)

Pin

Wire Color

Circuit No.

Function

A

BLK

1250

Ground

B

WHT

156

Courtesy Lamp Low Control

C

DK BLU/WHT

1495

Interior Lamp Control

Fog Lamps


Object Number: 38554  Size: CH

Connector Part Information

    • 12124817
    • 2 - Way F Metri Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

PPL

34

Front Fog Lamp Supply Voltage

B

BLK

650

Ground

Footwell Courtesy Lamps


Object Number: 130724  Size: CH

Connector Part Information

    • 12064869
    • 2 Way F Metri-Pack 150 Series (BLU)

Pin

Wire Color

Circuit No.

Function

A

DK BLU/WHT

1495

Interior Lamp Control

B

ORN

640

Battery Positive Voltage

Hazard Flasher


Object Number: 333032  Size: CH

Connector Part Information

    • 06288951
    • 2-Way F 56 Series (RED)

Pin

Wire Color

Circuit No.

Function

A

ORN

740

Battery Positive Voltage

B

BRN

27

Hazard Flasher Signal

Headlamp Dimmer Switch


Object Number: 332023  Size: CH

Connector Part Information

    • 08917693
    • 4-Way F 56 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

DK GRN/WHT

524

Headlamp Dimmer Switch High Beam Signal

C

YEL/BLK

1740

Battery Positive Voltage

D

--

--

Not Used

Headlamp Switch C1


Object Number: 73151  Size: CH

Connector Part Information

    • 12064799
    • 12-Way F Micro-Pack 100 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK/WHT

151

Ground

B

BRN

9

Park Lamp Supply Voltage

C

YEL

10

Headlamp Switch Signal

D

LT BLU

74

Park Lamp Switch Signal

E

GRY/BLK

308

Park Lamp Relay Control

F

PPL

34

Front Fog Lamp Supply Voltage

G

ORN

192

Front Fog Lamp Switch Signal

H - J

--

--

Not Used

K

YEL/BLK

1784

Twilight Sentinel Enable Signal

L

PPL

1783

Twilight Sentinel Delay Signal

M

BLK

470

Low Reference

Headlamp Switch C2


Object Number: 40422  Size: CH

Connector Part Information

    • 12064762
    • 6-Way F Metri-Pack 150 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

PPL

328

Interior Lamp Switch Signal

B

DK GRN

44

Instrument Panel Lamps Dimmer Switch Signal

C

BLK

470

Low Reference

D

BRN

1244

Instrument Panel Lamp Supply Voltage 2

E

BLK

150

Ground

F

--

--

Not Used

Headlamp - Low Beam - Left


Object Number: 35444  Size: CH

Connector Part Information

    • 12059180
    • 2-Way F Metri-Pack 280 Series (MD GRY)

Pin

Wire Color

Circuit No.

Function

A

TAN

712

Left Headlamp Low Beam Supply Voltage

B

BLK

750

Ground

Headlamp - Low Beam - Right


Object Number: 35444  Size: CH

Connector Part Information

    • 12059180
    • 2-Way F Metri-Pack 280 Series (MD GRY)

Pin

Wire Color

Circuit No.

Function

A

TAN

312

Right Headlamp Low Beam Supply Voltage

B

BLK

750

Ground

Headlamp - High Beam - Left


Object Number: 35447  Size: CH

Connector Part Information

    • 12059182
    • 2-Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT GRN

711

Left Headlamp High Beam Supply Voltage

B

PPL

359

DRL Supply Voltage

Headlamp - High Beam - Right


Object Number: 35447  Size: CH

Connector Part Information

    • 12059182
    • 2-Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT GRN

311

Right Headlamp High Beam Supply Voltage

B

PPL

359

DRL Supply Voltage

I/P Compartment Lamp


Object Number: 258297  Size: CH

Connector Part Information

    • 12015197
    • 2-Way F Metri-Pack 280 Series (BLU)

Pin

Wire Color

Circuit No.

Function

A

ORN

640

Battery Positive Voltage

B

BLK

150

Ground

License Lamps


Object Number: 387545  Size: CH

Connector Part Information

    • 12077765
    • LP Soc Bulb Bse-Type W2

Pin

Wire Color

Circuit No.

Function

A

BRN

9

Park Lamp Supply Voltage

B

BLK

1150

Ground

Marker Lamps - Front


Object Number: 287977  Size: CH

Connector Part Information

    • 12146595
    • Type W-2, Axial (LT GRY)

Pin

Wire Color

Circuit No.

Function

A

BRN

9

Park Lamp Supply Voltage

B

BLK

750

Ground

Marker Lamps - Rear


Object Number: 130733  Size: CH

Connector Part Information

    • 12146418
    • Type W-2, Right Angle

Pin

Wire Color

Circuit No.

Function

A

BRN

9

Park Lamp Supply Voltage

B

BLK

1150

Ground

Park/Turn Signal Lamps - LF


Object Number: 95769  Size: CH

Connector Part Information

    • 12160395
    • Type W3 Wedge Base-Right Angle

Pin

Wire Color

Circuit No.

Function

A

LT BLU

17

Left Turn Signal Lamp Supply Voltage

B

BRN

9

Park Lamp Supply Voltage

G

BLK

750

Ground

Park/Turn Signal Lamps - RF


Object Number: 95769  Size: CH

Connector Part Information

    • 12160395
    • Type W3 Wedge Base-Right Angle

Pin

Wire Color

Circuit No.

Function

A

LT BLU

15

Right Turn Signal Lamp Supply Voltage

B

BRN

9

Park Lamp Supply Voltage

G

BLK

750

Ground

Rear Compartment Lamp


Object Number: 295486  Size: CH

Connector Part Information

    • 08900863
    • Bulb Base Type W-2 (LT GRY)

Pin

Wire Color

Circuit No.

Function

A

ORN

640

Battery Positive Voltage

B

ORN/BLK

737

Trunk Lamp Control

Stop Lamp/AT Shift Lock Control Switch C1


Object Number: 73251  Size: CH

Connector Part Information

    • 12033701
    • 2-Way F Metri-Pack 480 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

ORN

1540

Battery Positive Voltage

B

LT BLU

20

Stop Lamp Supply Voltage

Stop Lamp/AT Shift Lock Control Switch C2


Object Number: 40397  Size: CH

Connector Part Information

    • 12033706
    • 4-Way F Metri-Pack 280 Series (BLU)

Pin

Wire Color

Circuit No.

Function

A

LT GRN

275

Park Neutral Position Switch Park Signal

B

DK GRN/WHT

1135

A/T Shift Lock Control Solenoid Supply Voltage

C-D

--

--

Not Used

Stop Lamp Switch


Object Number: 258178  Size: CH

Connector Part Information

    • 12033705
    • 4-Way F M/P 280 (NAT)

Pin

Wire Color

Circuit No.

Function

A

PNK

1039

Ignition 1 Voltage

B

PPL

420

TCC Brake Switch Signal

C

PNK

1039

Ignition 1 Voltage

D

GRY

847

Extended Travel Brake Switch Signal

Tail/Stop and Turn Signal Lamp - Left


Object Number: 306271  Size: CH

Connector Part Information

    • 12089345
    • Type C2, Right Angle (LT GRY)

Pin

Wire Color

Circuit No.

Function

A

YEL/BLK

18

Left Rear Stop/Turn Lamp Supply Voltage

YEL/BLK

18

Left Rear Stop/Turn Lamp Supply Voltage

B

BRN

9

Park Lamp Supply Voltage

BRN

9

Park Lamp Supply Voltage

G

BLK

1150

Ground

Tail/Stop and Turn Signal Lamp - Right


Object Number: 306271  Size: CH

Connector Part Information

    • 12089345
    • Type C2, Right Angle (LT GRY)

Pin

Wire Color

Circuit No.

Function

A

YEL/BLK

19

Right Rear Stop/Turn Lamp Supply Voltage

YEL/BLK

19

Right Rear Stop/Turn Lamp Supply Voltage

B

BRN

9

Park Lamp Supply Voltage

BRN

9

Park Lamp Supply Voltage

G

BLK

1150

Ground

Turn Signal Flasher Module


Object Number: 281199  Size: CH

Connector Part Information

    • 12034003
    • 5-Way F Metri-Pack 630 Series (BLK)

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

BLK

150

Ground

3

--

--

Not Used

4

PPL

16

Turn Signal Flasher Signal

5

BRN

141

Ignition 3 Voltage

Underhood Lamp


Object Number: 35437  Size: CH

Connector Part Information

    • 12052635
    • 2-Way F MetriPack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BRN

9

Park Lamp Supply Voltage

B

BLK

750

Ground

Vanity Mirror - Left and Right


Object Number: 35441  Size: CH

Connector Part Information

    • 12047663
    • 2-Way M Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN

640

Battery Positive Voltage

B

BLK

1250

Ground