GM Service Manual Online
For 1990-2009 cars only
Table 1: Ambient Air Temperature Sensor
Table 2: Back Up Lamp Switch
Table 3: Camshaft Position (CMP) Sensor
Table 4: Camshaft Position (CMP) Actuator Solenoid Valve
Table 5: Circuit Opening Relay
Table 6: Clutch Pedal Position (CPP) Switch
Table 7: Crankshaft Position (CKP) Sensor
Table 8: Engine Coolant Temperature (ECT) Sensor
Table 9: EFI Relay
Table 10: EVAP Pressure Switching Solenoid
Table 11: EVAP Purge Solenoid Valve
Table 12: EVAP Vent Solenoid Valve
Table 13: Fuel Injector #1
Table 14: Fuel Injector #2
Table 15: Fuel Injector #3
Table 16: Fuel Injector #4
Table 17: Fuel Sender Assembly
Table 18: Fuel Tank Pressure Sensor
Table 19: Heated Oxygen Sensor (HO2S) 1
Table 20: Heated Oxygen Sensor (HO2S) 2
Table 21: Idle Air Control (IAC) Motor
Table 22: Ignition Coil 1
Table 23: Ignition Coil 2
Table 24: Ignition Coil 3
Table 25: Ignition Coil 4
Table 26: Knock Sensor (KS)
Table 27: Mass Air Flow (MAF) Sensor
Table 28: Noise Filter
Table 29: Park/Neutral Position (PNP) Switch
Table 30: Throttle Position Sensor (TPS)
Table 31: Transmission Connector FWD
Table 32: Transmission Connector AWD
Table 33: Vehicle Speed Sensor (VSS) FWD (w/o ABS)
Table 34: Vehicle Speed Sensor (VSS) AWD

Ambient Air Temperature Sensor


Object Number: 334404  Size: CH

Connector Part Information

    • 90980-11030
    • BLK

Pin

Wire Color

Function

1

BLK

Ambient Air Temperature Sensor Input

2

BLK/BLU

Ground

Back Up Lamp Switch


Object Number: 334404  Size: CH

Connector Part Information

    • 90980-11250
    • GRY

Pin

Wire Color

Function

1

RED/BLK

Back Up Lamp Switch Feed Circuit

2

RED/WHT

Back Up Lamp Switch Signal Circuit

Camshaft Position (CMP) Sensor


Object Number: 339853  Size: CH

Connector Part Information

    • 90980-10947
    • BLK

Pin

Wire Color

Function

1

BLK

Camshaft Position Input

2

WHT

Sensor Ground

Camshaft Position (CMP) Actuator Solenoid Valve


Object Number: 820095  Size: CH

Connector Part Information

    • 90980-11162
    • BRN

Pin

Wire Color

Function

1

YEL

CMP Actuator High Control

2

BLK/YEL

CMP Actuator Low Control

Circuit Opening Relay


Object Number: 660786  Size: CH

Connector Part Information

--

Pin

Wire Color

Function

1

BLK

Relay Coil Feed Circuit

2

GRN/RED

Relay Coil Ground Circuit

3

BLK/RED

Relay Switch Ground Circuit

5

WHT/BLK

Relay Switch Feed Circuit

Clutch Pedal Position (CPP) Switch


Object Number: 820095  Size: CH

Connector Part Information

    • 90980-10825
    • WHT

Pin

Wire Color

Function

1

RED

Ignition Positive Voltage

2

BLK

CPP Signal Circuit

Crankshaft Position (CKP) Sensor


Object Number: 339853  Size: CH

Connector Part Information

    • 90980-10947
    • GRY

Pin

Wire Color

Function

1

BLK

Crankshaft Position Input

2

WHT

Sensor Ground

Engine Coolant Temperature (ECT) Sensor


Object Number: 820010  Size: CH

Connector Part Information

    • 90980-10737
    • DK GRY

Pin

Wire Color

Function

1

BRN

Sensor Ground

2

WHT

ECT Input

EFI Relay


Object Number: 660786  Size: CH

Connector Part Information

--

Pin

Wire Color

Function

1

BLK/WHT

Relay Coil Feed Circuit

2

WHT/BLK

Relay Coil Ground Circuit

3

BLK

Relay Switch Ground Circuit

5

RED/WHT

Relay Switch Feed Circuit

EVAP Pressure Switching Solenoid


Object Number: 334995  Size: CH

Connector Part Information

    • 90980-11859
    • BLK

Pin

Wire Color

Function

1

RED

EVAP Control

2

BLK

EVAP Feed Circuit

EVAP Purge Solenoid Valve


Object Number: 339854  Size: CH

Connector Part Information

    • 90980-11156
    • BLU

Pin

Wire Color

Function

1

BLU/BLK

EVAP Control Circuit

2

BLK

EVAP Feed Circuit

EVAP Vent Solenoid Valve


Object Number: 820255  Size: CH

Connector Part Information

    • 90980-11162
    • BLK

Pin

Wire Color

Function

1

BLU

EVAP Control Circuit

2

BLK

EVAP Feed Circuit

Fuel Injector #1


Object Number: 334996  Size: CH

Connector Part Information

    • 90980-11875
    • GRY

Pin

Wire Color

Function

1

BLK/WHT

Fuel Injector #1 Feed Circuit

2

YEL

Fuel Injector #1 Control Circuit

Fuel Injector #2


Object Number: 334996  Size: CH

Connector Part Information

    • 90980-11875
    • GRY

Pin

Wire Color

Function

1

BLK/WHT

Fuel Injector #2 Feed Circuit

2

BLK

Fuel Injector #2 Control Circuit

Fuel Injector #3


Object Number: 334996  Size: CH

Connector Part Information

    • 90980-11875
    • GRY

Pin

Wire Color

Function

1

BLK/WHT

Fuel Injector #3 Feed Circuit

2

WHT

Fuel Injector #3 Control Circuit

Fuel Injector #4


Object Number: 334996  Size: CH

Connector Part Information

    • 90980-11875
    • GRY

Pin

Wire Color

Function

1

BLK/WHT

Fuel Injector #4 Control Circuit

2

BLU

Fuel Injector #4 Feed Circuit

Fuel Sender Assembly


Object Number: 334997  Size: CH

Connector Part Information

    • 90980-11077
    • WHT

Pin

Wire Color

Function

1

--

Not Used

2

YEL

Fuel Gage

3

BRN

Low Fuel Indicator

4

BLK/RED

Fuel Pump Feed Circuit

5

WHT/BLK

Ground

Fuel Tank Pressure Sensor


Object Number: 335005  Size: CH

Connector Part Information

    • 90980-11143
    • BLK

Pin

Wire Color

Function

1

BRN

Sensor Ground

2

BLU

Fuel Tank Pressure Input

3

YEL

Reference Voltage

Heated Oxygen Sensor (HO2S) 1


Object Number: 335001  Size: CH

Connector Part Information

    • 90980-10869
    • DK GRY

Pin

Wire Color

Function

1

PNK

HO2S1 Heater Control

2

BLK

HO2S1 Heater Feed Circuit

3

BLK

HO2S1 Input

4

BRN

Ground

Heated Oxygen Sensor (HO2S) 2


Object Number: 820019  Size: CH

Connector Part Information

    • 90980-10794
    • DK GRY

Pin

Wire Color

Function

1

BLK

HO2S2 Feed Circuit

2

PNK/BLK

HO2S2 Heater Control

3

BRN

Ground

4

WHT

HO2S2 Input

Idle Air Control (IAC) Motor


Object Number: 339851  Size: CH

Connector Part Information

    • 90980-11145
    • GRY

Pin

Wire Color

Function

1

BLK/BLU

IAC Valve Open Control

2

BLK

IAC Feed Circuit

3

WHT/BLK

Ground

Ignition Coil 1


Object Number: 820192  Size: CH

Connector Part Information

    • 90980-11885
    • BRN

Pin

Wire Color

Function

1

BLK/WHT

Ignition Coil Feed Circuit

2

BLU/YEL

Ignition Fail Safe Input

3

RED/BLU

Ignition Trigger Circuit

4

WHT/BLK

Ground

Ignition Coil 2


Object Number: 820192  Size: CH

Connector Part Information

    • 90980-11885
    • BRN

Pin

Wire Color

Function

1

BLK/WHT

Ignition Coil Feed Circuit

2

BLU/YEL

Ignition Fail Safe Input

3

YEL/GRN

Ignition Trigger Circuit

4

WHT/BLK

Ground

Ignition Coil 3


Object Number: 820192  Size: CH

Connector Part Information

    • 90980-11885
    • BRN

Pin

Wire Color

Function

1

BLK/WHT

Ignition Coil Feed Circuit

2

BLU/YEL

Ignition Fail Safe Input

3

GRY

Ignition Trigger Circuit

4

WHT/BLK

Ground

Ignition Coil 4


Object Number: 820192  Size: CH

Connector Part Information

    • 90980-11885
    • BRN

Pin

Wire Color

Function

1

BLK/WHT

Ignition Coil Feed Circuit

2

BLU/YEL

Ignition Fail Safe Input

3

WHT

Ignition Trigger Circuit

4

WHT/BLK

Ground

Knock Sensor (KS)


Object Number: 334996  Size: CH

Connector Part Information

    • 90980-11875
    • BLK

Pin

Wire Color

Function

1

WHT

Knock Sensor Input Circuit

2

BLK

Ground

Mass Air Flow (MAF) Sensor


Object Number: 820101  Size: CH

Connector Part Information

    • 90980-11317
    • BLK

Pin

Wire Color

Function

1

BLK

MAF Feed Circuit

2

BLU/WHT

MAF Signal Low

3

GRN

MAF Signal High

4

YEL/BLK

IAT Sensor Input

5

BRN

Sensor Ground

Noise Filter


Object Number: 820022  Size: CH

Connector Part Information

    • 90980-10843
    • GRY

Pin

Wire Color

Function

1

BLK/WHT

Noise Filter Feed Circuit

2

--

Not Used

Park/Neutral Position (PNP) Switch


Object Number: 820186  Size: CH

Connector Part Information

    • 90980-11784
    • GRY

Pin

Wire Color

Function

1

--

Not Used

2

RED/BLK

Reverse Position Signal

3

RED/WHT

PNP Switch Feed Circuit

4

LT GRN

2nd Gear Position Signal

5

--

Not Used

6

BLK

Start Position Signal

7

BLU

Drive Position Signal

8

LT GRN/BLK

Low Position Signal

9

RED

PNP Switch Start Circuit

Throttle Position Sensor (TPS)


Object Number: 339857  Size: CH

Connector Part Information

    • 90980-11261
    • BLK

Pin

Wire Color

Function

1

YEL

Reference Voltage

2

BRN

Sensor Ground

3

LT GRN

Throttle Position Input

Transmission Connector FWD


Object Number: 820252  Size: CH

Connector Part Information

    • 90980-10854
    • GRY

Pin

Wire Color

Function

1

RED/WHT

PC Solenoid High

2

BLU/WHT

TCC Solenoid Control

3

RED/YEL

Shift Solenoid 1 Control

4

PNK

PC Solenoid Low

5

--

Not Used

6

BLU

Shift Solenoid 2 Circuit

Transmission Connector AWD


Object Number: 820120  Size: CH

Connector Part Information

    • 90980-11658
    • GRY

Pin

Wire Color

Function

1

WHT/BLU

Transmission Fluid Temperature Input Circuit

2

BLU/ORN

2nd Brake Control Solenoid

3

RED/WHT

PC Solenoid High

4

BLU/WHT

TCC Solenoid Control

5

RED/YEL

Shift Solenoid 1 Control

6

BRN

Transmission Fluid Temperature Ground Circuit

7

--

Not Used

8

PNK

PC Solenoid Low

9

--

Not Used

10

BLU

Shift Solenoid 2 Circuit

Vehicle Speed Sensor (VSS) FWD (w/o ABS)


Object Number: 335027  Size: CH

Connector Part Information

    • 90980-11143
    • BLK

Pin

Wire Color

Function

1

RED/WHT

VSS Feed Circuit

2

BRN

Sensor Ground

3

WHT/GRN

VSS Input Circuit

Vehicle Speed Sensor (VSS) AWD


Object Number: 820010  Size: CH

Connector Part Information

    • 90980-11156
    • BLK

Pin

Wire Color

Function

1

BLK

Sensor Ground

2

WHT

VSS Input