GM Service Manual Online
For 1990-2009 cars only
Table 1: Automatic Transmission Selector Control (AT Trans.)
Table 2: Backup Lamp Switch
Table 3: Cigar Lighter Lamp
Table 4: Clearance Lamp (Typical)
Table 5: Clearance Lamps Switch
Table 6: Dome Lamp
Table 7: DRL Resistor
Table 8: Hazard Flasher
Table 9: Headlamp, High Beam (Left)
Table 10: Headlamp, Low Beam (Left)
Table 11: Headlamp, High Beam (Right)
Table 12: Headlamp, Low Beam (Right)
Table 13: Inverting Driver Module
Table 14: LIghted Mirror Jumper (C216)
Table 15: Park Brake Switch, Daytime Running Lamps (Air Brakes)
Table 16: Park/Turn Lamp, Left
Table 17: Park/Turn Lamp, Right
Table 18: Side Marker Lamp (Typical)
Table 19: Stoplamp Switch (Air Brakes)
Table 20: Stop Lamp Switch (Hydraulic)
Table 21: Tail, Stop and Turn Signal Lamp, Left
Table 22: Tail, Stop and Turn Signal Lamp, Right
Table 23: Turn Signal Switch C1
Table 24: Trailer Stoplamp Switch
Table 25: Trailer Stop Relay (Air Brakes)
Table 26: Trailer Stop Relay (Hydraulic)

Automatic Transmission Selector Control (AT Trans.)


Object Number: 237082  Size: CH

Connector Part Information

    • 6 Way F
    • (BLK)

Pin

Wire Color

Circuit No.

Function

A

RED/GRN

41

Illumination

B

RED

37

Fuse Output Ignition

C

BLK/WHT

40

Transmission Park/Neutral Signal

D

BLK/RED

46

Interior Lamp Dimming Buss

E

RED/BLU

38

Select Lever Back Lamp

F

BLK/RED

39

Neutral Signal

Backup Lamp Switch


Object Number: 236598  Size: CH

Connector Part Information

    • 12052641
    • ASM 2F M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

BRN

441

Fuse Output Ignition

B

LT GRN

24

Back Up Lamp Feed

Cigar Lighter Lamp


Object Number: 236009  Size: CH

Connector Part Information

    • 2 Way
    • Male

Pin

Wire Color

Circuit No.

Function

A

BLK/RED

165

Interior Lamp Dimming Buss

B

BRN

163

Illumination

Clearance Lamp (Typical)


Object Number: 237091  Size: CH

Connector Part Information

    • 2 Way M
    • (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

8

Ground

B

BRN

9

Lamp Feed

Clearance Lamps Switch


Object Number: 237083  Size: CH

Connector Part Information

    • 6 Way
    • Female

Pin

Wire Color

Circuit No.

Function

1

GRN

111

Fuse Output Battery

2

ORN

112

Switch Output

3

ORN

113

Switch Telltale Feed

4

BLK

114

Ground

5

BRN

115

Illumination

6

BLK/RED

116

Interior Lamps Dimming Buss

Dome Lamp


Object Number: 240168  Size: CH

Connector Part Information

    • 3 Way
    • Female

Pin

Wire Color

Circuit No.

Function

A

RED

3

Dome Lamp

B

RED/YEL

2

Dome Lamp

C

ORN

1

Dome Lamp

DRL Resistor


Object Number: 237053  Size: CH

Connector Part Information

    • 2 Way
    • Female

Pin

Wire Color

Circuit No.

Function

A

RED/YEL

715

Lighting Relay

B

RED/BLK

729

Daytime Running Lamp ON Relay

Hazard Flasher


Object Number: 236961  Size: CH

Connector Part Information

    • 10 Way
    • Female

Pin

Wire Color

Circuit No.

Function

1

LT BLU

136

Front Combination Lamp (Left)

2

WHT

105

Stoplamp Switch (Air)

2

WHT

471

Stoplamp Switch (Hydraulic)

3

BLU

139

Front Combination Lamp, Right

4

GRN

135

Stop and Turn, Right

5

YEL

134

Stop and Turn, Left

6

--

--

Not Used

7

BLU/BLK

132

Turn Signal Input, Left

8

BLU/ORN

133

Turn Signal Input, Right

9

ORN

131

Fuse Output Battery

10

ORN

137

Fuse Output Battery

Headlamp, High Beam (Left)


Object Number: 236963  Size: CH

Connector Part Information

    • 3 Way F
    • (BLK)

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

RED/YEL

688

Headlamp

C

BLK/WHT

692

Headlamp High Beam

Headlamp, Low Beam (Left)


Object Number: 236963  Size: CH

Connector Part Information

    • 3 Way F
    • (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK/WHT

690

High Beam

B

RED/BLK

691

Lighting Relay Output, Low

C

RED/YEL

689

Headlamp

Headlamp, High Beam (Right)


Object Number: 236963  Size: CH

Connector Part Information

    • 3 Way F
    • (BLK)

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

BLK/WHT

698

High Beam

C

RED/WHT

694

Headlamp

Headlamp, Low Beam (Right)


Object Number: 236963  Size: CH

Connector Part Information

    • 3 Way F
    • (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK/WHT

696

Lighting (High/Low)

B

RED/BLK

697

Low Beam

C

RED/WHT

695

Headlamp

Inverting Driver Module


Object Number: 237093  Size: CH

Connector Part Information

    • 12010488
    • 6 Way Connector Assembly P/C Edgeboard Standard (BLK)

Pin

Wire Color

Circuit No.

Function

A

BRN

651

Electronic Control Module Pin-14

B

PNK

654

Fuse Output-Battery

C

WHT

653

Electronic Control Module Pin-23

D

BLK

652

Ground

E-F

--

--

Not Used

LIghted Mirror Jumper (C216)


Object Number: 236079  Size: CH

Connector Part Information

    • 6 Way
    • Female

Pin

Wire Color

Circuit No.

Function

1

BRN

147

Illumination

2-4

--

--

Not Used

5

BRN

147

Illumination

6

--

--

Not Used

Park Brake Switch, Daytime Running Lamps (Air Brakes)


Object Number: 246698  Size: CH

Connector Part Information

    • 2 Way M
    • (GRY)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

744

Daytime Running Lamps (DRL) Off Relay Air Brake

B

BLK

746

Park Brake Switch Air Brake

Park/Turn Lamp, Left


Object Number: 73223  Size: CH

Connector Part Information

    • 12162182
    • ASM 3F M/P 150.2 Series Pull To Seat (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

14

Turn Signal Lamp Feed, Left Front

B

BLK

150

Ground

C

BRN

9

Park Lamp Feed

Park/Turn Lamp, Right


Object Number: 73223  Size: CH

Connector Part Information

    • 12162182
    • ASM 3F M/P 150.2 Series Pull To Seat (BLK)

Pin

Wire Color

Circuit No.

Function

A

DK BLU

15

Turn Signal Lamp Feed, Right Front

B

BLK

150

Ground

C

BRN

9

Park Lamp Feed

Side Marker Lamp (Typical)


Object Number: 237053  Size: CH

Connector Part Information

    • 2 Way F
    • (BLK)

Pin

Wire Color

Circuit No.

Function

A

BRN

20

Park Lamp Feed

B

BLK

21

Ground

Stoplamp Switch (Air Brakes)


Object Number: 237053  Size: CH

Connector Part Information

    • 12065402
    • ASM 2F M/P 150 SLD (BRN)

Pin

Wire Color

Circuit No.

Function

A

ORN

103

Stop Lamp Switch

B

WHT

104

Stop Lamp Switch

Stop Lamp Switch (Hydraulic)


Object Number: 236009  Size: CH

Connector Part Information

    • 2 Way
    • Female

Pin

Wire Color

Circuit No.

Function

A

WHT

471

Stop Lamp Switch

B

GRN/WHT

470

Stop Lamp Switch

Tail, Stop and Turn Signal Lamp, Left


Object Number: 222697  Size: CH

Connector Part Information

    • 12065862
    • ASM 4F M/P 280 (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT GRN

24

Back Up Lamp Feed

B

BRN

9

Park Lamp Feed

C

YEL

19

Back Up Lamp Feed

D

--

--

Not Used-Sealed

E

BLK

150

Ground

Tail, Stop and Turn Signal Lamp, Right


Object Number: 222697  Size: CH

Connector Part Information

    • 12065862
    • ASM 4F M/P 280 (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT GRN

24

Back Up Lamp Feed

B

BRN

9

Park Lamp Feed

C

DK GRN

18

Stop/Turn Lamp Feed, Right Rear

D

--

--

Not Used-Sealed

E

BLK

150

Ground

Turn Signal Switch C1


Object Number: 339165  Size: CH

Connector Part Information

    • 22 Way
    • Female

Pin

Wire Color

Circuit No.

Function

1

BLK

87

Ground

2

GRN/WHT

85

Taillamps Relay (Relay Center 1)

3

RED/YEL

721

Lighting (Hi, Low) Relay (Relay Center 1)

4

RED/BLK

717

Lighting Relay (Relay Center 1)

5

BLK

86

Ground

6

BLU/BLK

132

Hazard Flasher Pin-7

7

BLU/ORN

133

Hazard Flasher Pin-8

8-9

--

--

Not Used

10

GRN/RED

170

Horn Relay (Relay Center 2)

11

BRN

83

IP Cluster C1 (Battery)

12

BLU/ORN

453

Washer Pump

13

ORN

84

Fuse Output-Battery

14

RED/BLK

152

Diode (Dome Lamp)

15-22

--

--

Not Used

Trailer Stoplamp Switch


Object Number: 237053  Size: CH

Connector Part Information

    • 2 Way
    • Male

Pin

Wire Color

Circuit No.

Function

A

WHT

9

Trailer Stoplamps

B

ORN

8

Trailer Stoplamps

Trailer Stop Relay (Air Brakes)


Object Number: 39670  Size: CH

Connector Part Information

    • 12129716
    • ASM 4F M/P 280 FLX LK SLD (GRY)

Pin

Wire Color

Circuit No.

Function

30

RED

142

Fuse Output Battery

85

WHT

17

Stoplamp Switch Output

86

BLK

150

Ground

87

LT BLU

20

Stoplamp Feed

Trailer Stop Relay (Hydraulic)


Object Number: 39670  Size: CH

Connector Part Information

    • 12129716
    • ASM 4F M/P 280 FLX LK SLD (GRY)

Pin

Wire Color

Circuit No.

Function

30

RED

142

Fuse Output Battery

85

GRA

847

Brake Pedal Switch Output-Extended Travel

86

BLK

150

Ground

87

RED

950

Stoplamp Feed