GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2002 🢒 GMC C Sierra - 2WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E 🢒 Lighting Systems Connector End Views
Table 1: Ambient Light Sensor
Table 2: Ashtray Lamp
Table 3: Backup Lamp - Left, Right
Table 4: Cargo/Fog Lamp Switch
Table 5: Center High Mounted Stop Lamp (CHMSL)
Table 6: Center High Mounted Roof Marker Lamps - LH, RH
Table 7: Clearance Lamps
Table 8: Console Compartment Lamp - Luxury
Table 9: Console Courtesy Lamp - Luxury
Table 10: Courtesy Lamp - Left, Right
Table 11: Cupholder Lamp
Table 12: Daytime Running Lamp (DRL) - Left, Right
Table 13: Dimmer Switch
Table 14: Door Courtesy Lamp - LF, RF, LR
Table 15: Door Courtesy Lamp - RR
Table 16: Fog Lamp - Left, Right
Table 17: Headlamp - Low Beam - Left
Table 18: Headlamp - Low Beam - Right
Table 19: Headlamp - High Beam - Left
Table 20: Headlamp - High Beam - Right
Table 21: IP Compartment Lamp
Table 22: Junction Block - Rear Lamps - C1
Table 23: Junction Block - Rear Lamps - C2
Table 24: Junction Block - Rear Lamps - C3
Table 25: Junction Block - Rear Lamps - C4
Table 26: License Lamps
Table 27: Marker Lamp - LF
Table 28: Marker Lamp - RF
Table 29: Mini Wedge (Door Jamb Switch) - Driver - C1 - Base
Table 30: Mini Wedge (Door Jamb Switch) - Driver - C1 - Uplevel and Luxury
Table 31: Mini Wedge (Door Jamb Switch) - Driver - C3 - Luxury
Table 32: Mini Wedge (Door Jamb Switch) - Front Passenger - C1 - Base
Table 33: Mini Wedge (Door Jamb Switch) - Front Passenger - C1 - Uplevel and Luxury
Table 34: Mini Wedge (Door Jamb Switch) - Front Passenger - C3 - Luxury
Table 35: Mini Wedge (Door Jamb Switch) - C1 - LR - Crewcab
Table 36: Mini Wedge (Door Jamb Switch) - C1 - RR - Crewcab
Table 37: Park/Turn Signal Lamp - LF
Table 38: Park/Turn Signal Lamp - RF
Table 39: Roof Beacon Relay
Table 40: Roof Beacon Switch
Table 41: Stop lamp Switch
Table 42: Tail/Stop Lamp - Left
Table 43: Tail/Stop Lamp - Right
Table 44: Trailer Connector - Light Duty
Table 45: Trailer Connector - Heavy Duty
Table 46: Underhood Lamp

Ambient Light Sensor


Object Number: 82383 Size: CH

Connector Part Information
    • 12047662
    • 2-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

GRY

705

5 Volt Reference

B

WHT

278

Ambient Light Sensor Signal

Ashtray Lamp


Object Number: 38556 Size: CH

Connector Part Information
    • 12124722
    • 2-Way Lamp Socket Wedge Base W2 (GRY)

Pin

Wire Color

Circuit No.

Function

A

BRN

2409

Interior Park Lamps Supply Voltage

B

BLK

1850

Ground

Backup Lamp - Left, Right


Object Number: 82372 Size: CH

Connector Part Information
    • 12160393
    • 2-Way Lamp Socket Wedge Base W3 Right angle (LT GRY)

Pin

Wire Color

Circuit No.

Function

A

LT GRN

1324

Backup Lamp Supply Voltage

G

BLK

1750

Ground

Cargo/Fog Lamp Switch


Object Number: 365965 Size: CH

Connector Part Information
    • 12177010
    • 8-Way F Metri-Pack 150 Series (BLU)

Pin

Wire Color

Circuit No.

Function

A

BLK

1850

Ground

B

PPL

34

Front Fog Lamps Supply Voltage

C

ORN

192

Front Fog Lamp Switch Signal

D

GRY

8

Instrument Panel Lamp Supply Voltage - 1

E

PPL

34

Front Fog Lamps Supply Voltage

F

BLK

1850

Ground

G

ORN

192

Front Fog Lamp Switch Signal

H

GRY

8

Instrument Panel Lamp Supply Voltage - 1

Center High Mounted Stop Lamp (CHMSL)


Object Number: 39660 Size: CH

Connector Part Information
    • 12047785
    • 4-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN

1732

Courtesy Lamps Supply Voltage

B

DK

BLU/

WHT

149

Courtesy Lamp Supply Voltage/Cargo Lamp Low Control

C

LT BLU

1620

Trailer CHMSL Supply Voltage

D

BLK

1850

Ground

Center High Mounted Roof Marker Lamps - LH, RH


Object Number: 82383 Size: CH

Connector Part Information
    • 12047662
    • 2-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BRN

2409

Interior Park Lamps Supply Voltage

B

BLK

2450

Ground

Clearance Lamps


Object Number: 82383 Size: CH

Connector Part Information
    • 12047662
    • 2-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BRN

2409

Interior Park Lamps Supply Voltage

B

BLK

1050

Ground

Console Compartment Lamp - Luxury


Object Number: 82383 Size: CH

Connector Part Information
    • 12047662
    • 2-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BRN

2409

Interior Park Lamps Supply Voltage & Y91

B

BLK

1850

Ground & Y91

Console Courtesy Lamp - Luxury


Object Number: 82383 Size: CH

Connector Part Information
    • 12047662
    • 2-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN

1732

Courtesy Lamps Supply Voltage

B

WHT

156

Courtesy Lamp Low Control & Y91

Courtesy Lamp - Left, Right


Object Number: 365949 Size: CH

Connector Part Information
    • 12084388
    • 2-Way Lamp Socket BB W-2 (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN

1732

Courtesy Lamps Supply Voltage

B

WHT

156

Courtesy Lamp Low Control

Cupholder Lamp


Object Number: 309447 Size: CH

Connector Part Information
    • 12110566
    • 1-Way F Lamp Socket BB W-1 (BLK)

Pin

Wire Color

Circuit No.

Function

A

BRN

2409

Interior Park Lamps Supply Voltage

B

BLK

1850

Ground

Daytime Running Lamp (DRL) - Left, Right


Object Number: 82372 Size: CH

Connector Part Information
    • 15354859
    • 2-Way F Lamp Socket BB W-3 (NAT)

Pin

Wire Color

Circuit No.

Function

A

DK BLU

545

DRL Supply Voltage

G

BLK

150

Ground

Dimmer Switch


Object Number: 362755 Size: CH

Connector Part Information
    • 15304617
    • 10-Way F Metri-Pack Junction Systems (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

74

Park Lamp Switch Signal

B

ORN

240

Battery Positive Voltage

C

WHT

352

Headlamp Relay Coil Supply Voltage

D

ORN

1140

Battery Positive Voltage

E

BLK

1850

Ground

F

--

--

Not Used

G

DK

BLU/

WHT

1495

Courtesy Lamp Switch Signal

H

--

--

Not Used

J

PPL

328

Interior Lamp Defeat Switch Signal

K

DK GRN

44

Instrument Panel Lamps Dimmer Switch Signal

Door Courtesy Lamp - LF, RF, LR


Object Number: 82383 Size: CH

Connector Part Information
    • 12047662
    • 2-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN

1732

Courtesy Lamps Supply Voltage

B

WHT

156

Courtesy Lamp Low Control

Door Courtesy Lamp - RR


Object Number: 82383 Size: CH

Connector Part Information
    • 12047662
    • 2-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN

1732

Battery Positive Voltage

B

WHT

156

Courtesy Lamp Low Control

Fog Lamp - Left, Right


Object Number: 646148 Size: CH

Connector Part Information
    • 12020599
    • 2-Way F Metri-Pack-280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

PPL

34

Front Fog Lamps Supply Voltage

B

BLK

150

Ground

Headlamp - Low Beam - Left


Object Number: 684796 Size: CH

Connector Part Information
    • 12059181
    • 2-Way F Metri-Pack 280 Series Sealed (MD GRY)

Pin

Wire Color

Circuit No.

Function

A

ORN

1340

Battery Positive Voltage

B

YEL

525

Headlamp Dimmer Switch Low Beam Signal

Headlamp - Low Beam - Right


Object Number: 684796 Size: CH

Connector Part Information
    • 12059181
    • 2-Way F Metri-Pack 280 Series Sealed (MD GRY)

Pin

Wire Color

Circuit No.

Function

A

ORN

1240

Battery Positive Voltage

B

YEL

525

Headlamp Dimmer Switch Low Beam Signal

Headlamp - High Beam - Left


Object Number: 684797 Size: CH

Connector Part Information
    • 12059183
    • 2-Way F Metri-Pack 280 Series Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN

1340

Battery Positive Voltage

B

PPL

524

Headlamp Dimmer Switch High Beam Signal

Headlamp - High Beam - Right


Object Number: 684797 Size: CH

Connector Part Information
    • 12059183
    • 2-Way F Metri-Pack 280 Series Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN

1240

Battery Positive Voltage

B

PPL

524

Headlamp Dimmer Switch High Beam Signal

IP Compartment Lamp


Object Number: 82383 Size: CH

Connector Part Information
    • 12047662
    • 2-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN

1732

Courtesy Lamps Supply Voltage

B

BLK

2450

Ground

Junction Block - Rear Lamps - C1


Object Number: 374043 Size: CH

Connector Part Information
    • 15305595
    • 8-Way F GT 280 Series (BLU)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

2114

Left Turn Signal Lamps Supply Voltage

B

LT BLU

1320

CHMSL Supply Voltage

C

LT GRN

1324

Backup Lamp Supply Voltage

D

BRN/WHT

2609

Right Rear Park Lamps Supply Voltage

E

BLK

1750

Ground -UY7

F

LT GRN

1324

Backup Lamp Supply Voltage

G

BRN

2509

Left Rear Park Lamps Supply Voltage

H

DK BLU

2115

Right Turn Signal Lamps Supply Voltage

Junction Block - Rear Lamps - C2


Object Number: 374045 Size: CH

Connector Part Information
    • 15305596
    • 7-Way F GT 280 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

BLK

1750

Ground

B

BLK

1750

Ground

C

BLK

1750

Ground

D

LT BLU

1320

CHMSL Supply Voltage

E

BRN

2509

Left Rear Park Lamps Supply Voltage

F

LT GRN

1324

Backup Lamp Supply Voltage

H

LT BLU

2114

Left Turn Signal Lamps Supply Voltage

Junction Block - Rear Lamps - C3


Object Number: 374048 Size: CH

Connector Part Information
    • 15305599
    • 8-Way F GT 280 Series (BRN)

Pin

Wire Color

Circuit No.

Function

A

BRN/WHT

2609

Right Rear Park Lamps Supply Voltage (Except Sierra Denali)

A

--

--

Not Used (Sierra Denali)

B

BRN/WHT

2609

Right Rear Park Lamps Supply Voltage

C

BLK

1750

Ground

D

BLK

1750

Ground

E

BLK

1750

Ground

F

BRN

2509

Left Rear Park Lamps Supply Voltage

G

BRN

2509

Left Rear Park Lamps Supply Voltage

H

BLK

1750

Ground

Junction Block - Rear Lamps - C4


Object Number: 374047 Size: CH

Connector Part Information
    • 15305597
    • 7-Way F GT 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

1320

CHMSL Supply Voltage

B

BRN/WHT

2609

Right Rear Park Lamps Supply Voltage

C

BLK

1750

Ground

D

BLK

1750

Ground

E

LT GRN

1324

Backup Lamp Supply Voltage

F

DK BLU

2115

Right Turn Signal Lamps Supply Voltage

H

BLK

1750

Ground

License Lamps


Object Number: 309447 Size: CH

Connector Part Information
    • 12110053
    • Bulb Type W-2, Axial

Pin

Wire Color

Circuit No.

Function

A

BRN

2509

Left Rear Park Lamps Supply Voltage

B

BLK

1750

Ground

Marker Lamp - LF


Object Number: 309447 Size: CH

Connector Part Information
    • 12110053
    • Bulb Type W-2, Axial

Pin

Wire Color

Circuit No.

Function

A

BRN

2309

Front Park Lamps Supply Voltage

B

LT BLU

2114

Left Turn Signal Lamps Supply Voltage

Marker Lamp - RF


Object Number: 309447 Size: CH

Connector Part Information
    • 12110053
    • Bulb Type W-2, Axial

Pin

Wire Color

Circuit No.

Function

A

BRN

2309

Front Park Lamps Supply Voltage

B

DK BLU

2115

Right Turn Signal Lamps Supply Voltage

Mini Wedge (Door Jamb Switch) - Driver - C1 - Base


Object Number: 684806 Size: CH

Connector Part Information
    • 12110196
    • 2-Way F Metri-Pack 150 SPL Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

TAN

126

Left Front Door Open Switch Signal

D

BLK

1850

Ground

Mini Wedge (Door Jamb Switch) - Driver - C1 - Uplevel and Luxury


Object Number: 655858 Size: CH

Connector Part Information
    • 15336846
    • 3-Way F GT 150 SLD 3.2 X 4.0 (BLU)

Pin

Wire Color

Circuit No.

Function

A

LT GRN/

BLK

394

Left Front Door Handle Switch Signal (Luxury)

A

--

--

Not Used (Uplevel)

B

--

--

Not Used

C

TAN

126

Left Front Door Open Switch Signal

D

BLK

1850

Ground

Mini Wedge (Door Jamb Switch) - Driver - C3 - Luxury


Object Number: 684793 Size: CH

Connector Part Information
    • 12052642
    • 2-Way F Metri-Pack 150 Series Sealed (LT GRN)

Pin

Wire Color

Circuit No.

Function

A

BLK

1850

Ground

B

LT GRN

252

Driver Door Key Switch Signal

Mini Wedge (Door Jamb Switch) - Front Passenger - C1 - Base


Object Number: 684806 Size: CH

Connector Part Information
    • 12110196
    • 2-Way F Metri- Pack 150 SPL Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

D

ORN

54

Passenger Door Jamb Switch Signal

Mini Wedge (Door Jamb Switch) - Front Passenger - C1 - Uplevel and Luxury


Object Number: 655861 Size: CH

Connector Part Information
    • 15336864
    • 4-Way F GT 150 SLD 3.2 X 4.0 (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

2450

Ground

B

DK BLU/

WHT

727

Secondary Door Latch Switch Signal

C

-

-

Not Used

D

LT GRN/

BLK

394

Left Front Door Handle Switch Signal (Luxury)

D

--

--

Not Used (Uplevel)

Mini Wedge (Door Jamb Switch) - Front Passenger - C3 - Luxury


Object Number: 684793 Size: CH

Connector Part Information
    • 12052642
    • 2-Way F Metri-Pack 150 Series Sealed (LT GRN)

Pin

Wire Color

Circuit No.

Function

A

BLK

1050

Ground

B

LT GRN

252

Driver Door Key Switch Signal

Mini Wedge (Door Jamb Switch) - C1 - LR - Crewcab


Object Number: 684806 Size: CH

Connector Part Information
    • 12110196
    • 2-Way F Metri- Pack 150 SPL Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

DK

BLU/

WHT

727

Secondary Door Latch Switch Signal

D

BLK

1150

Ground

Mini Wedge (Door Jamb Switch) - C1 - RR - Crewcab


Object Number: 684806 Size: CH

Connector Part Information
    • 12110196
    • 2-Way F Metri-Pack 150 SPL Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

1150

Ground

D

DK

BLU/

WHT

727

Secondary Door Latch Switch Signal

Park/Turn Signal Lamp - LF


Object Number: 38605 Size: CH

Connector Part Information
    • 15324084
    • Bulb Type W-3, Right Angle

Pin

Wire Color

Circuit No.

Function

A

LT BLU

2114

Left Turn Signal Lamps Supply Voltage

B

BRN

2309

Front Park Lamps Supply Voltage

G

BLK

150

Ground

Park/Turn Signal Lamp - RF


Object Number: 38605 Size: CH

Connector Part Information
    • 15324084
    • Bulb Type W-3, Right Angle

Pin

Wire Color

Circuit No.

Function

A

DK BLU

2115

Right Turn Signal Lamps Supply Voltage

B

BRN

2309

Front Park Lamps Supply Voltage

G

BLK

150

Ground

Roof Beacon Relay


Object Number: 281201 Size: CH

Connector Part Information
    • 12110541
    • 6-Way F Metri-Pack 280 Series Flexlock (BLK)

Pin

Wire Color

Circuit No.

Function

A1

BLK

1150

Ground

A2

BRN

27

Hazard Flasher Signal

B1-B2

--

--

Not Used

C1

ORN

2340

Battery Positive Voltage

C2

WHT

111

Hazard Switch Signal

Roof Beacon Switch


Object Number: 304345 Size: CH

Connector Part Information
    • 12177195
    • 6-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

BLK

2550

Ground

C

WHT

111

Hazard Switch Signal

D

PPL/WHT

1382

LED Dimming Signal

E

GRY

8

Instrument Panel Lamp Supply Voltage - 1

F

ORN

2240

Battery Positive Voltage

Stop lamp Switch


Object Number: 62424 Size: CH

Connector Part Information
    • 12040551
    • 6-Way F Metri-Pack 480 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

WHT

17

Stop Lamp Switch Signal

B

ORN

1540

Battery Positive Voltage

C

PPL

420

TCC Brake Switch Signal

D

BRN

441

Ignition 3 Voltage

E

LT GRN/

BLK

584

A/T Shift Lock Control Switch Supply Voltage

F

DK

GRN/

WHT

1135

A/T Shift Lock Control Solenoid Supply Voltage

Tail/Stop Lamp - Left


Object Number: 95769 Size: CH

Connector Part Information
    • 12160395
    • 3-Way Lamp Socket Wedge Base W3 Right Angle (MD GRY)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

1320

CHMSL Supply Voltage

B

BRN

2509

Left Rear Park Lamps Supply Voltage

G

BLK

1750

Ground

Tail/Stop Lamp - Right


Object Number: 95769 Size: CH

Connector Part Information
    • 12160395
    • 3-Way Lamp Socket Wedge Base W3 Right Angle (MD GRY)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

1320

CHMSL Supply Voltage

B

BRN/WHT

2609

Right Rear Park Lamps Supply Voltage

G

BLK

1750

Ground

Trailer Connector - Light Duty


Object Number: 525095 Size: CH

Connector Part Information
    • 15354653
    • 7-Way F Metri-Pack 280 Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT GRN

1624

Trailer Backup Lamps Supply Voltage

B

WHT

22

Ground

C

DK BLU

47

Trailer Auxiliary Supply Voltage

D

DK GRN

1619

Trailer Right Rear Turn/Stop Lamp Supply Voltage

E

RED

742

Battery Positive Voltage

F

BRN

2109

Trailer Park Lamps Supply Voltage

G

YEL

1618

Trailer Left Rear Turn/Stop Lamp Supply Voltage

Trailer Connector - Heavy Duty


Object Number: 525095 Size: CH

Connector Part Information
    • 15354653
    • 7-Way F Metri-Pack 280 Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT GRN

1624

Trailer Backup Lamps Supply Voltage

B

WHT

22

Ground & UY7

C

DK BLU

47

Trailer Auxiliary Supply Voltage

D

DK GRN

1619

Trailer Right Rear Turn/Stop Lamp Supply Voltage

E

RED

742

Battery Positive Voltage

F

BRN

2109

Trailer Park Lamps Supply Voltage

G

YEL

1618

Trailer Left Rear Turn/Stop Lamp Supply Voltage

Underhood Lamp


Object Number: 537107 Size: CH

Connector Part Information
    • 12052644
    • 2-Way F Metri-Pack 150 Series Sealed (GRY)

Pin

Wire Color

Circuit No.

Function

A

BLK

550

Ground

B

ORN

1732

Courtesy Lamps Supply Voltage