GM Service Manual Online
For 1990-2009 cars only
Table 1: Ambient Light Sensor
Table 2: Center High Mounted Stop Lamp (CHMSL)
Table 3: Cigar Lighter Illumination Lamp
Table 4: Daytime Running Lamps (DRL) Control Module
Table 5: Dome Lamp
Table 6: Hazard Switch
Table 7: I/P Lamp Dimmer
Table 8: LH Combination Lamp
Table 9: Left Front Park/Turn Lamp
Table 10: LH Headlamp
Table 11: Rear License Plate Lamp
Table 12: Rear Compartment Lamp
Table 13: RH Headlamp
Table 14: RH Rear Combination Lamp
Table 15: Right Front Park/Turn Lamp
Table 16: Stoplamp Switch

Ambient Light Sensor


Object Number: 334413  Size: CH

Connector Part Information

    • 90980-11107
    • BLK

Pin

Wire Color

Function

1

RED

Reference High

2

--

Not Used

3

GRN/RED

Reference Low

4

WHT/RED

Reference Signal

Center High Mounted Stop Lamp (CHMSL)


Object Number: 334414  Size: CH

Connector Part Information

    • 90980-11148
    • WHT

Pin

Wire Color

Function

1

WHT/BLK

Ground

2

GRN/WHT

Brake Signal

Cigar Lighter Illumination Lamp


Object Number: 334414  Size: CH

Connector Part Information

    • 90980-11148
    • WHT

Pin

Wire Color

Function

1

WHT/GRN

Illumination Controller

2

GRN

Tail Fuse

Daytime Running Lamps (DRL) Control Module


Object Number: 334416  Size: CH

Connector Part Information

    • 90980-11058
    • WHT

Pin

Wire Color

Function

1

WHT/BLK

Ground

2

RED/WHT

Headlamps Signal

3

RED/YEL

High Beam Signal

4

RED/YEL

Brake Indicator Control

5

GRN/RED

Reference Low

6

RED

Reference High

7-10

--

Not Used

11

RED/YEL

DRL Ground

12

WHT/BLK

Ground

13

YEL

Charge Input

14

RED/BLK

Parking Brake Signal

15

WHT/RED

Reference Signal

16

LT GRN

Tail Relay Control

17

LT GRN/BLK

Park Lamps Signal

18

RED/BLK

DRL Relay Control

19

RED/WHT

Head Relay Control

20

WHT/RED

Dimmer Relay Control

21

RED/GRN

High Beam Indicator Control

22

BLU/YEL

Battery Positive Voltage

23

RED/BLU

Ignition Positive Voltage

24

--

Not Used

25

RED/YEL

DRL Ground

Dome Lamp


Object Number: 334415  Size: CH

Connector Part Information

    • 90980-10935
    • WHT

Pin

Wire Color

Function

1

RED/WHT

Dome Lamp Control

2

BLU/YEL

Battery Positive Voltage

Hazard Switch


Object Number: 334473  Size: CH

Connector Part Information

    • 90980-10801
    • BLK

Pin

Wire Color

Function

1

GRN/BLK

Hazard LH Output

2

GRN/YEL

Hazard RH Output

3

--

Not Used

4

GRN/WHT

Flashing Output

5

GRN/RED

Hazard on Request

6

WHT

Ignition Positive Voltage

7

GRN/ORN

Ignition Positive Voltage

8

GRN

Lights ON Signal

9

WHT/GRN

Illumination Lamp

10

--

Not Used

I/P Lamp Dimmer


Object Number: 334417  Size: CH

Connector Part Information

    • 90980-10216
    • CLR

Pin

Wire Color

Function

1

GRN

Lights On Signal

2

WHT/BLK

Ground

3

WHT/GRN

Illumination Lamps

LH Combination Lamp


Object Number: 334991  Size: CF

Connector Part Information

    • 90980-11011
    • WHT

Pin

Wire Color

Function

1

GRN

Park Lamp Signal

2

GRN/WHT

Brake Signal

3

GRN/BLK

Left Turn Signal

4

RED/BLK

Reverse Light Signal

5

WHT/BLK

Ground

6

--

Not Used

Left Front Park/Turn Lamp


Object Number: 334421  Size: CH

Connector Part Information

    • 90980-11020
    • WHT

Pin

Wire Color

Function

1

GRN

Parking Lamp Signal

2

WHT/BLK

Ground

3

GRN/BLK

Left Turn Signal

LH Headlamp


Object Number: 334948  Size: CH

Connector Part Information

    • 90980-98037
    • BLK

Pin

Wire Color

Function

1

RED/GRN

Dimmer Relay Low

2

RED/YEL

Dimmer Relay High

3

RED/BLK

Ground

Rear License Plate Lamp


Object Number: 334420  Size: CH

Connector Part Information

    • 90980-11159
    • WHT

Pin

Wire Color

Function

1

WHT/BLK

Ground

2

GRN

Parking Lamp Signal

Rear Compartment Lamp


Object Number: 334414  Size: CH

Connector Part Information

    • 90980-11148
    • WHT

Pin

Wire Color

Function

1

BLU/YEL

Ignition Positive Voltage

2

RED/WHT

Rear Compartment Lamp Control

RH Headlamp


Object Number: 334948  Size: CH

Connector Part Information

    • 90980-98037
    • BLK

Pin

Wire Color

Function

1

RED/GRN

Dimmer Relay Low

2

RED/YEL

Dimmer Relay High

3

RED/BLU

Ground

RH Rear Combination Lamp


Object Number: 428024  Size: CH

Connector Part Information

    • 90980-11011
    • WHT

Pin

Wire Color

Function

1

GRN

Park Lamp Signal

2

GRN/WHT

Brake Signal

3

GRN/YEL

Right Turn Signal

4

RED/BLK

Reverse Light Signal

5

WHT/BLK

Ground

6

--

Not Used

Right Front Park/Turn Lamp


Object Number: 334421  Size: CH

Connector Part Information

    • 90980-11020
    • WHT

Pin

Wire Color

Function

1

GRN

Parking Lamp Signal

2

WHT/BLK

Ground

3

GRN/YEL

RT Turn Signal

Stoplamp Switch


Object Number: 334422  Size: CH

Connector Part Information

    • 90980-11118
    • BLU

Pin

Wire Color

Function

1

GRN/WHT

Brake Signal

2

RED/WHT

Battery Positive Voltage

3

GRN/BLK

Cruise Control Module

4

RED/YEL

Cruise Control Servo