GM Service Manual Online
For 1990-2009 cars only
Table 1: A/C Compressor Clutch
Table 2: A/C High Pressure Cut-Off Switch
Table 3: A/C Low Pressure Cut-Off Switch
Table 4: Ambient Air Temperature Sensor
Table 5: Bank #1 Heated Oxygen Sensor (HO2S) #1
Table 6: Bank #1 Heated Oxygen Sensor (HO2S) #3
Table 7: Bank #2 Heated Oxygen Sensor (HO2S) #1
Table 8: Camshaft Position Sensor Connector
Table 9: Crankshaft Position Sensor Connector
Table 10: Distributor Ignition Control Module Connector
Table 11: Engine Coolant Temperature Sensor Connector
Table 12: Engine Oil Pressure Gauge Sensor Connector
Table 13: Evaporative Canister Purge Vent Valve Connector
Table 14: Fuel Pressure Sensor Connector
Table 15: Fuel Pump Connector
Table 16: Fuel Pump and Sender Connector
Table 17: Idle Air Control Valve Motor Connector
Table 18: Ignition Coil Connector
Table 19: Intake Air Temperature Sensor Connector
Table 20: Knock Sensor Connector
Table 21: Linear EGR Valve Solenoid Connector
Table 22: Manifold Absolute Pressure Sensor Connector
Table 23: Mass Air Flow Sensor Connector
Table 24: Park/Neutral Back-Up Lamp Switch Connector (C1)
Table 25: Park/Neutral Back-up Lamp Switch Connector (C2)
Table 26: Throttle Position Sensor Connector
Table 27: Vehicle Speed Sensor Connector (Engine)
Table 28: Vehicle Speed Sensor (Front)
Table 29: Vehicle Speed Sensor( Rear)
Table 30: Water Valve Solenoid Connector

A/C Compressor Clutch


Object Number: 280759  Size: CH

Connector Part Information

    • 12162017
    • 2-Way Metri-Pack Series 150 (GRY)

Pin

Wire Color

Circuit No.

Function

A

BLK

850

Ground

B

DK GRN

59

Air Conditioning Compressor Clutch Solenoid Feed

A/C High Pressure Cut-Off Switch


Object Number: 38560  Size: CH

Connector Part Information

    • 12162438
    • 2-Way Metri-Pack Series 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

DK GRN/WHT

762

Air Conditioning Request Signal

B

LT GRN

66

Air Conditioning Switch Output

A/C Low Pressure Cut-Off Switch


Object Number: 333039  Size: CH

Connector Part Information

    • 12052644
    • 2-Way Metri-Pack Series 150 (GRY)

Pin

Wire Color

Circuit No.

Function

A

BLK

850

Ground

B

DK GRN

603

Air Conditioning Refrigerant Low Pressure Cut - Out Switch Output

Ambient Air Temperature Sensor


Object Number: 35437  Size: CH

Connector Part Information

    • 12162438
    • 2-Way Metri-Pack Series 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT GRN/BLK

735

Outside Ambient Temperature Sensor Signal

B

BLK

550

Ground

Bank #1 Heated Oxygen Sensor (HO2S) #1


Object Number: 280761  Size: CH

Connector Part Information

    • 12160482
    • 4-Way Female M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

TAN/WHT

1653

Oxygen Sensor Return Left Forward of Catalytic Converter

B

PPL/WHT

1665

Oxygen Sensor Signal Left Forward of Catalytic Converter

C

BLK

850

Ground

D

PNK

539

Fuse Output Ignition 1 Type 3 Fuse

Bank #1 Heated Oxygen Sensor (HO2S) #3


Object Number: 280761  Size: CH

Connector Part Information

    • 12160482
    • 4-Way Female M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

TAN/WHT

1669

Oxygen Sensor Return Left Rear Of Catalytic Converter

B

PPL/WHT

1668

Oxygen Sensor Signal Left Rear Of Catalytic Converter

C

BLK

850

Ground

D

PNK

539

Fuse Output Ignition 1 Type 3 Fuse

Bank #2 Heated Oxygen Sensor (HO2S) #1


Object Number: 280761  Size: CH

Connector Part Information

    • 12160482
    • 4-Way 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

TAN

1667

Oxygen Sensor Return Right Forward Of Catalytic Converter

B

PPL

1666

Oxygen Sensor Signal Right Forward Of Catalytic Converter

C

BLK

850

Ground

D

PNK

539

Fuse Output Ignition 1 Type 3 Fuse

Camshaft Position Sensor Connector


Object Number: 68730  Size: CH

Connector Part Information

    • 12110294
    • 3-Way M/P (BLK)

Pin

Wire Color

Circuit No.

Function

A

PNK/BLK

632

Camshaft Position Sensor Return

B

BRN/WHT

633

Camshaft Position Sensor Signal

C

PNK

539

Fuse Output Ignition 1 Type 3 Fuse

Crankshaft Position Sensor Connector


Object Number: 62453  Size: CH

Connector Part Information

    • 12059595
    • 3-Way Female M/P 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

PNK

439

Fuse Output Ignition 1 Type 3 Fuse

B

PPL

574

Crankshaft Position Sensor Return

C

YEL

573

Crankshaft Position Sensor Signal

Distributor Ignition Control Module Connector


Object Number: 38608  Size: CH

Connector Part Information

    • 12162189
    • 4-Way Female M/P 150.2 Pull-To-Seat (BLK)

Pin

Wire Color

Circuit No.

Function

A

PNK

439

Fuse Output-Ignition 1-Type 3 Fuse

B

WHT

423

Electronic Spark Timing Control Signal

C

BLK

550

Ground

D

WHT/BL K

1847

Ignition (Oil Output-Bank B

Engine Coolant Temperature Sensor Connector


Object Number: 232831  Size: CH

Connector Part Information

    • 12162194
    • 2-Way Female M/P 150.2 Pull-to-Seat (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

452

Sensor Return

B

YEL

410

Coolant Temperature Sensor Signal

Engine Oil Pressure Gauge Sensor Connector


Object Number: 236480  Size: CH

Connector Part Information

    • 12066299
    • 1-Way Female M/P 150 Series

Pin

Wire Color

Circuit No.

Function

A

TAN/WHT

331

Oil Pressure Sensor Signal

Evaporative Canister Purge Vent Valve Connector


Object Number: 35437  Size: CH

Connector Part Information

    • 12052643
    • 2-Way Female M/P 150 (RED)

Pin

Wire Color

Circuit No.

Function

A

PNK

539

Fuse Output Ignition 1-Type 3 Fuse

B

GRY/WHT

428

Canister Purge Solenoid Output

Fuel Pressure Sensor Connector


Object Number: 62453  Size: CH

Connector Part Information

    • 12059595
    • 3-Way Female M/P 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK/WHT

470

Sensor Return

B

DK GRN

890

Fuel Tank Pressure Sensor Signal

C

GRY/BLK

474

Reference Voltage Feed - 5 Volts

Fuel Pump Connector


Object Number: 280761  Size: CH

Connector Part Information

    • 12160482
    • 4-Way Female M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

PPL/WHT

1589

(ECM) Engine Control Module

B

GRY

120

Fuel Pump Motor Feed

C

BLK

1650

Ground

D

BLK/WHT

470

Sensor Return

Fuel Pump and Sender Connector


Object Number: 68760  Size: CH

Connector Part Information

    • 12160482
    • ASM 4F M/P 150 SLD (BLK)

Pin

Wire Color

Circuit No.

Function

A

PPL/WHT

1589

Fuel Level Signal to VCM

B

GRY

120

Fuel Pump Motor Feed

C

BLK

150

Ground

D

BLK

470

Sensor Return

Idle Air Control Valve Motor Connector


Object Number: 38608  Size: CH

Connector Part Information

    • 12162189
    • 4-WAY Female M/P 150.2 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

DK GRN/BLK

444

Idle Air Control Valve Motor Coil Motor Coil B Low

B

LT GRN/WHT

1749

Idle Air Control Valve Motor Feed Coil B High

C

LT BLU/BLK

1748

Idle Air Control Valve Motor Feed Coil A Low

D

DK BLU/WHT

1747

Idle Air Control Valve Motor Feed Coil A High

Ignition Coil Connector


Object Number: 68743  Size: CH

Connector Part Information

    • 12146121
    • 3-Way Female 150 Series (BRN)

Pin

Wire Color

Circuit No.

Function

A

PNK

439

Fuse Output Ignition 1 Type 3 Fuse

B

--

--

Not Used

C

WHT/BL K

1847

Ignition Coil Output-Bank B

Intake Air Temperature Sensor Connector


Object Number: 68719  Size: CH

Connector Part Information

    • 12162198
    • 2-Way Female M/P 150.2 P25 (GRY)

Pin

Wire Color

Circuit No.

Function

A

TAN

472

Manifold Absolute Temperature Sensor Signal

B

BLK

470

Sensor Return

Knock Sensor Connector


Object Number: 35416  Size: CH

Connector Part Information

    • 12103023
    • 1-Way Weather Pack (GRY)

Pin

Wire Color

Circuit No.

Function

A

DK BLU

496

Knock Sensor Signal #1

Linear EGR Valve Solenoid Connector


Object Number: 68773  Size: CH

Connector Part Information

    • 12186057
    • 5-Way Female M/P 150.2 Pull-to-Seat (BLK)

Pin

Wire Color

Circuit No.

Function

A

WHT

257

Exhaust Gas Recirculation Vent Solenoid Output

B

BLK

470

Sensor Return

C

BRN

1456

Exhaust Gas Recirculation Solenoid Position Signal

D

GRY

474

Reference Voltage Feed 5 Volt Signal

E

RED

1676

Exhaust Gas Recirculation Vent Solenoid Feed

Manifold Absolute Pressure Sensor Connector


Object Number: 68740  Size: CH

Connector Part Information

    • 12129945
    • 3-Way Female 150 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

BKLK

470

Sensor Return

B

KT GRN

432

Manifold Absolute Pressure Sensor Signal

C

GRY

474

Reference Voltage Feed 5 Volt

Mass Air Flow Sensor Connector


Object Number: 62453  Size: CH

Connector Part Information

    • 12059595
    • 3-Way Female 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

YEL

492

Mass Air Flow Sensor Signal

B

BLK

550

Ground

C

PNK

539

Fuse Output Ignition 1-Type 3 Fuse

Park/Neutral Back-Up Lamp Switch Connector (C1)


Object Number: 40412  Size: CH

Connector Part Information

    • 12191750
    • 4-Way Female M/P Sealed (NAT)

Pin

Wire Color

Circuit No.

Function

A

BLK/WHT

771

Transmission Position Switch Signal Bit 1

B

GRY

773

Transmission Position Switch Signal Bit 3

C

WHT

776

Transmission Position Switch Signal Parity Bit

D

YEL

772

Transmission Position Switch Signal Bit 2

Park/Neutral Back-up Lamp Switch Connector (C2)


Object Number: 68780  Size: CH

Connector Part Information

    • 12129840
    • 7-Way mixed series sealed (GRY)

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

LT GRN

275

Transmission Mounted Neutral Safety Switch Output Park

C

PNK

139

Fuse Output Ignition 1 Type 3 Fuse

D

BLK/WHT

651

Fuel Gauge Sensor Ground

E

PPL

806

Fuse Output Crank Type

F

LT GRN

24

Back-Up Lamp Feed

G

YEL

1737

Transmission Mounted Neutral Safety Switch Output Park/Neutral

Throttle Position Sensor Connector


Object Number: 258299  Size: CH

Connector Part Information

    • 12078090
    • 3-Way Female M/P 150 Pull-To-Seat (BLK)

Pin

Wire Color

Circuit No.

Function

A

GRY

416

Reference Voltage Feed-5 Volt

B

BLK

452

Sensor Return

C

DK BLU

417

Throttle Position Sensor Signal

Vehicle Speed Sensor Connector (Engine)


Object Number: 232831  Size: CH

Connector Part Information

    • 
        12162194
    • 2-Way Female M/P 150.2 Pull-to-Seat (BLK)

Pin

Wire Color

Circuit No.

Function

A

PPL/WHT

821

Vehicle Speed Sensor Signal

B

LT GRN/BLK

822

Vehicle Speed Sensor Return

Vehicle Speed Sensor (Front)


Object Number: 232831  Size: CH

Connector Part Information

    • 12162194
    • 2-Way Female M/P 150.2 (BLK)

Pin

Wire Color

Circuit No.

Function

A

YEL

400

Vehicle Speed Sensor Signal

B

PPL

401

Vehicle Speed Sensor Return

Vehicle Speed Sensor( Rear)


Object Number: 232831  Size: CH

Connector Part Information

    • 12162194
    • 2-Way Female M/P 150.2 (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

2221

Rear Transfer Case Speed Sensor Signal

B

DK GRN

2222

Rear Transfer Case Speed Sensor Return

Water Valve Solenoid Connector


Object Number: 35437  Size: CH

Connector Part Information

    • 
        12052641
    • 2-Way Female M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

GRY/BLK

1596

Heater Water Control Solenoid Output

B

BLK

850

Ground