GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 Express - AWD 🢒 Body 🢒 Lighting Systems 🢒 Lighting Systems Connector End Views
Table 1: Backup Lamp - Left (Passenger/Cargo)
Table 2: Backup Lamp - Right (Passenger/Cargo)
Table 3: Center High Mounted Stop Lamp (CHMSL) (Passenger/Cargo)
Table 4: Courtesy/Reading Lamp - Front
Table 5: Courtesy/Reading Lamp - Mid (Passenger/Cargo)
Table 6: Courtesy/Reading Lamp - Rear (Passenger/Cargo)
Table 7: Dome Fluorescent Work Lamps (PNP w/UF2)
Table 8: Dome Fluorescent Work Lamp Relay (PNP w/UF2)
Table 9: Dome Lamp - Rear (Cargo)
Table 10: Door Jamb Switch - LR Side (E26)
Table 11: Door Jamb Switch - RR Side (Passenger/Cargo)
Table 12: Door Latch Assembly - Cargo - C1
Table 13: Door Latch Assembly - Driver - C1
Table 14: Door Latch Assembly - Passenger - C1
Table 15: Headlamp - High Beam - Left (Composite)
Table 16: Headlamp - High Beam - Right (Composite)
Table 17: Headlamp - Left (Sealed)
Table 18: Headlamp - Low Beam - Left (Composite)
Table 19: Headlamp - Low Beam - Right (Composite)
Table 20: Headlamp - Right (Sealed)
Table 21: Headlamp and Panel Dimmer Switch - C1
Table 22: License Lamp (Passenger/Cargo)
Table 23: Marker Lamp - LF
Table 24: Marker Lamp - RF
Table 25: Park/Turn Signal Lamp - LF
Table 26: Park/Turn Signal Lamp - RF
Table 27: Stop Lamp Switch
Table 28: Tail/Stop and Turn Signal Lamp - Left (Passenger/Cargo)
Table 29: Tail/Stop and Turn Signal Lamp - Right (Passenger/Cargo)
Table 30: Trailer Stop/Turn Relay - Left (UY7)
Table 31: Trailer Stop/Turn Relay - Right (UY7)
Table 32: Turn Signal/Hazard Flasher Module
Table 33: Turn Signal/Multifunction Switch - C1
Table 34: Turn Signal/Multifunction Switch - C2
Table 35: Turn Signal/Multifunction Switch - C3
Table 36: Turn Signal/Multifunction Switch - C4 (K34)
Table 37: Underhood Lamp
Table 38: Vanity Mirror Lamp - Left (DH6)
Table 39: Vanity Mirror Lamp - Right (DH6)

Backup Lamp - Left (Passenger/Cargo)


Object Number: 82372 Size: CH

Connector Part Information
    • 12160393
    • 2-Way Lamp Socket Wedge Base W3 Right Angle (L-GY)

Pin

Wire Color

Circuit No.

Function

A

L-GN

24

Backup Lamp Supply Voltage

G

BK

850

Ground

Backup Lamp - Right (Passenger/Cargo)


Object Number: 82372 Size: CH

Connector Part Information
    • 12160393
    • 2-Way Lamp Socket Wedge Base W3 Right Angle (L-GY)

Pin

Wire Color

Circuit No.

Function

A

L-GN

24

Backup Lamp Supply Voltage

G

BK

1050

Ground

Center High Mounted Stop Lamp (CHMSL) (Passenger/Cargo)


Object Number: 35441 Size: CH

Connector Part Information
    • 12047663
    • 2-Way M Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

L-BU

1320

CHMSL Supply Voltage

B

BK

850

Ground

Courtesy/Reading Lamp - Front


Object Number: 333035 Size: CH

Connector Part Information
    • 12047781
    • 3-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

D-BU/WH

149

Courtesy Lamp Supply Voltage

B

BK

450

Ground

C

OG

1732

Inadvertent Power Supply Voltage

Courtesy/Reading Lamp - Mid (Passenger/Cargo)


Object Number: 333035 Size: CH

Connector Part Information
    • 12047781
    • 3-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

D-BU/WH

149

Courtesy Lamp Supply Voltage

B

BK

450

Ground

C

OG

1732

Inadvertent Power Supply Voltage

Courtesy/Reading Lamp - Rear (Passenger/Cargo)


Object Number: 333035 Size: CH

Connector Part Information
    • 12047781
    • 3-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

D-BU/WH

149

Courtesy Lamp Supply Voltage

B

BK

450

Ground

C

OG

1732

Inadvertent Power Supply Voltage

Dome Fluorescent Work Lamps (PNP w/UF2)


Object Number: 280768 Size: CH

Connector Part Information
    • 12052832
    • 2-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

D-BU/WH

149

Dome Fluorescent Lamp Supply Voltage

B

BK

150

Ground

Dome Fluorescent Work Lamp Relay (PNP w/UF2)


Object Number: 281201 Size: CH

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

Pin

Wire Color

Circuit No.

Function

A1

OG

840

Battery Positive Voltage

A2

--

--

Not Used

B1

--

--

Not Used

B2

D-BU/WH

149

Dome Fluorescent Lamp Supply Voltage

C1

OG

840

Battery Positive Voltage

C2

GY/BK

690

Dome Fluorescent Work Lamp Relay Control

Dome Lamp - Rear (Cargo)


Object Number: 68722 Size: CH

Connector Part Information
    • 15528758
    • 2-Way F Dome Lamp Base (NA)

Pin

Wire Color

Circuit No.

Function

A

D-BU/WH

149

Courtesy Lamp Supply Voltage

B

BK

850

Ground

Door Jamb Switch - LR Side (E26)


Object Number: 35451 Size: CH

Connector Part Information
    • 12059251
    • 2-Way F Metri-Pack 150 Series (RD)

Pin

Wire Color

Circuit No.

Function

A

BK

450

Ground

B

YE/BK

1181

Rear Door Open Switch Signal

Door Jamb Switch - RR Side (Passenger/Cargo)


Object Number: 35451 Size: CH

Connector Part Information
    • 12059251
    • 2-Way F Metri-Pack 150 Series (RD)

Pin

Wire Color

Circuit No.

Function

A

BK

450

Ground

B

YE/BK

1181

Rear Door Open Switch Signal

Door Latch Assembly - Cargo - C1


Object Number: 684948 Size: CH

Connector Part Information
    • 15354716
    • 4-Way F GT 150 Series, Sealed 3.2 X 4.0 (BK)

Pin

Wire Color

Circuit No.

Function

A

L-GN

1177

Door Open Switch Signal

B-C

--

--

Not Used

D

BK

1050

Ground

Door Latch Assembly - Driver - C1


Object Number: 684948 Size: CH

Connector Part Information
    • 15354716
    • 4-Way F GT 150 Series, Sealed 3.2 X 4.0 (BK)

Pin

Wire Color

Circuit No.

Function

A

TN

126

Left Front Door Open Switch Signal

B-C

--

--

Not Used

D

BK

450

Ground

Door Latch Assembly - Passenger - C1


Object Number: 684948 Size: CH

Connector Part Information
    • 15354716
    • 4-Way F GT 150 Series, Sealed 3.2 X 4.0 (BK)

Pin

Wire Color

Circuit No.

Function

A

BK

450

Ground

B-C

--

--

Not Used

D

L-GN

1177

Door Open Switch Signal

Headlamp - High Beam - Left (Composite)


Object Number: 684797 Size: CH

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

Pin

Wire Color

Circuit No.

Function

A

D-GN/WH

711

Left Headlamp High Beam Supply Voltage

B

BK

250

Ground

Headlamp - High Beam - Right (Composite)


Object Number: 684797 Size: CH

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

Pin

Wire Color

Circuit No.

Function

A

L-GN/BK

311

Right Headlamp High Beam Supply Voltage

B

BK

650

Ground

Headlamp - Left (Sealed)


Object Number: 306269 Size: CH

Connector Part Information
    • 12034372
    • 3-Way F Metri-Pack 800 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

BK

250

Ground

B

D-GN/WH

711

Left Headlamp High Beam Supply Voltage

C

YE

712

Left Headlamp Low Beam Supply Voltage

Headlamp - Low Beam - Left (Composite)


Object Number: 684796 Size: CH

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

Pin

Wire Color

Circuit No.

Function

A

YE

712

Left Headlamp Low Beam Supply Voltage

B

BK

250

Ground

Headlamp - Low Beam - Right (Composite)


Object Number: 684796 Size: CH

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

Pin

Wire Color

Circuit No.

Function

A

TN/WH

312

Right Headlamp Low Beam Supply Voltage

B

BK

650

Ground

Headlamp - Right (Sealed)


Object Number: 306269 Size: CH

Connector Part Information
    • 12034372
    • 3-Way F Metri-Pack 800 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

BK

650

Ground

B

L-GN/BK

311

Right Headlamp High Beam Supply Voltage

C

TN/WH

312

Right Headlamp Low Beam Supply Voltage

Headlamp and Panel Dimmer Switch - C1


Object Number: 647976 Size: CH

Connector Part Information
    • 15332161
    • 12-Way F GT 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

GY

705

5-Volt Reference

B

BN/WH

230

Instrument Panel Lamps Dimming Control

C

BK

350

Ground

D

WH

103

Headlamp Switch Headlamps On Signal

E

BN/WH

301

Park Lamp Switch On Signal

F

D-GN

306

DRL On/Off Signal

G

OG/BK

2090

Dimming Input

H

GY/BK

2226

Dimming Return

J

D-BU/WH

1495

Courtesy Lamps On Signal

K

PU/WH

1382

LED Dimming Signal

L

PK

1348

Headlamp On Indicator Supply Voltage

M

PU

328

Interior Lamp Defeat Switch Signal

License Lamp (Passenger/Cargo)


Object Number: 744036 Size: CH

Connector Part Information
    • 12110053
    • 2-Way F Wedge Base Type W-2 Sealed (GY)

Pin

Wire Color

Circuit No.

Function

A

BN

2509

Left Rear Park Lamps Supply Voltage

B

BK

1050

Ground

Marker Lamp - LF


Object Number: 68721 Size: CH

Connector Part Information
    • 15300027
    • 2-Way F Metri-Pack 280 Series, Sealed (BK)

Pin

Wire Color

Circuit No.

Function

A

BN

2309

Front Park Lamps Supply Voltage

B

BK

250

Ground

Marker Lamp - RF


Object Number: 68721 Size: CH

Connector Part Information
    • 15300027
    • 2-Way F Metri-Pack 280 Series, Sealed (BK)

Pin

Wire Color

Circuit No.

Function

A

BN

2309

Front Park Lamps Supply Voltage

B

BK

650

Ground

Park/Turn Signal Lamp - LF


Object Number: 847206 Size: CH

Connector Part Information
    • 12040977
    • 3-Way F Metri-Pack 280 Series, Sealed (BK)

Pin

Wire Color

Circuit No.

Function

A

L-BU

2114

Left Front Turn Signal Lamps Supply Voltage

B

BN

2309

Front Park Lamps Supply Voltage

C

BK

250

Ground

Park/Turn Signal Lamp - RF


Object Number: 847206 Size: CH

Connector Part Information
    • 12040977
    • 3-Way F Metri-Pack 280 Series, Sealed (BK)

Pin

Wire Color

Circuit No.

Function

A

D-BU

2115

Right Front Turn Signal Lamps Supply Voltage

B

BN

2309

Front Park Lamps Supply Voltage

C

BK

650

Ground

Stop Lamp Switch


Object Number: 62424 Size: CH

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

Pin

Wire Color

Circuit No.

Function

A

WH

17

Stop Lamp Switch Signal

B

RD/WH

1540

Battery Positive Voltage

C

PK

739

Ignition 1 Voltage

D

PU

420

TCC Brake Switch/Cruise Control Release Signal

E

L-GN/BK

584

A/T Shift Lock Control Switch Supply Voltage

F

D-GN/WH

1135

A/T Shift Lock Control Solenoid Supply Voltage

Tail/Stop and Turn Signal Lamp - Left (Passenger/Cargo)


Object Number: 38605 Size: CH

Connector Part Information
    • 12160394
    • 3-Way Lamp Socket Wedge Base W3 Right Angle (WH)

Pin

Wire Color

Circuit No.

Function

A

YE

618

Left Rear Turn Signal Lamp Supply Voltage

B

BN

2509

Left Rear Park Lamps Supply Voltage

G

BK

850

Ground

BK

850

Ground

Tail/Stop and Turn Signal Lamp - Right (Passenger/Cargo)


Object Number: 38605 Size: CH

Connector Part Information
    • 12160394
    • 3-Way Lamp Socket Wedge Base W3 Right Angle (WH)

Pin

Wire Color

Circuit No.

Function

A

YE

619

Right Rear Turn Signal Lamp Supply Voltage

B

BN

2609

Right Rear Park Lamps Supply Voltage

G

BK

1050

Ground

BK

1050

Ground

Trailer Stop/Turn Relay - Left (UY7)


Object Number: 535912 Size: CH

Connector Part Information
    • 12129716
    • 4-Way F Metri-Pack 280 Series Flexlock (GY)

Pin

Wire Color

Circuit No.

Function

30

OG

1340

Battery Positive Voltage

85

YE

618

Left Rear Turn Signal Lamp Supply Voltage

86

BK

150

Ground

87

YE

1618

Trailer Left Rear Turn/Stop Lamp Supply Voltage

Trailer Stop/Turn Relay - Right (UY7)


Object Number: 535912 Size: CH

Connector Part Information
    • 12129716
    • 4-Way F Metri-Pack 280 Series Flexlock (GY)

Pin

Wire Color

Circuit No.

Function

30

OG

1340

Battery Positive Voltage

85

D-GN

619

Right Rear Turn Signal Lamp Supply Voltage

86

BK

150

Ground

87

D-GN

1619

Trailer Right Rear Turn/Stop Lamp Supply Voltage

Turn Signal/Hazard Flasher Module


Object Number: 800518 Size: CH

Connector Part Information
    • 15332177
    • 16-Way F GT 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

D-BU

5364

Left DRL/Turn Supply Voltage

B

YE

18

Left Rear Stop/Turn Lamp Supply Voltage

C

L-GN/BK

592

DRL Low Control

D

D-GN

19

Right Rear Stop/Turn Lamp Supply Voltage

E

D-GN

5365

Right DRL/Turn Supply Voltage

F

WH

17

Stop Lamp Switch Signal

G

L-BU/WH

1314

Left Front Turn Signal Lamp Supply Voltage

H

D-BU/WH

1315

Right Front Turn Signal Lamp Supply Voltage

J

RD/WH

540

Battery Positive Voltage

K

WH

111

Hazard Switch Signal

L

L-BU/WH

1414

Left Turn Signal Switch Signal

M

D-BU/WH

1415

Right Turn Signal Switch Signal

N

BK

350

Ground

P-S

--

--

Not Used

Turn Signal/Multifunction Switch - C1


Object Number: 39746 Size: CH

Connector Part Information
    • 12064862
    • 8-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

D-BU/WH

1415

Right Turn Signal Switch Signal

B

PK

739

Ignition 1 Voltage

C

L-BU/WH

1414

Left Turn Signal Switch Signal

D-F

--

--

Not Used

G

TN

28

Horn Relay Control

H

WH

111

Hazard Switch Signal

Turn Signal/Multifunction Switch - C2


Object Number: 130718 Size: CH

Connector Part Information
    • 12059800
    • 5-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

YE

307

Headlamp Switch Flash to Pass Signal

B

L-GN

11

Headlamp Dimmer Switch Signal

C-D

--

--

Not Used

E

BK

350

Ground

Turn Signal/Multifunction Switch - C3


Object Number: 811190 Size: CH

Connector Part Information
    • 15339058
    • 7-Way F Metri-Pack/150 Series (GY)

Pin

Wire Color

Circuit No.

Function

G

--

--

Not Used

H

PK

94

Windshield Washer Switch Signal

J

GY

478

Windshield Wiper Switch Signal 2

K

D-BU

477

Windshield Wiper Switch Signal 1

L-N

--

--

Not Used

Turn Signal/Multifunction Switch - C4 (K34)


Object Number: 39661 Size: CH

Connector Part Information
    • 12047786
    • 4-Way M Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

PK

739

Ignition 1 Voltage

B

GY

397

Cruise Control On Switch Signal

C

GY/BK

87

Cruise Control Resume/Accel Switch Signal

D

D-BU

84

Cruise Control Set/Coast Switch Signal

Underhood Lamp


Object Number: 537107 Size: CH

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

Pin

Wire Color

Circuit No.

Function

A

OG

1732

Inadvertent Power Supply Voltage

B

BK

1250

Ground

Vanity Mirror Lamp - Left (DH6)


Object Number: 35441 Size: CH

Connector Part Information
    • 12047663
    • 2-Way M Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

OG

1732

Inadvertent Power Supply Voltage

B

BK

450

Ground

Vanity Mirror Lamp - Right (DH6)


Object Number: 35441 Size: CH

Connector Part Information
    • 12047663
    • 2-Way M Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

OG

1732

Inadvertent Power Supply Voltage

B

BK

450

Ground