GM Service Manual Online
For 1990-2009 cars only

Engine Controls Connector End Views 7.4L

Table 1: Camshaft Position (CMP) Sensor
Table 2: Crankshaft Position (CKP) Sensor
Table 3: Engine Coolant Temperature (ECT) Sensor
Table 4: Evaporative Emissions Canister (EVAP) Purge Valve
Table 5: Exhaust Gas Recirculation (EGR) Valve
Table 6: Fuel Pump Module
Table 7: Fuel Pump Relay
Table 8: Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1
Table 9: Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
Table 10: Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2
Table 11: Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2
Table 12: Idle Air Control (IAC) Valve
Table 13: Ignition Coil
Table 14: Ignition Control Module (ICM)
Table 15: Intake Air Temperature (IAT) Sensor
Table 16: Manifold Absolute Pressure (MAP) Sensor
Table 17: Mass Air Flow (MAF) Sensor
Table 18: Park/Neutral Position (PNP) Switch Relay
Table 19: Park/Neutral Position (PNP) and Backup Lamps Switch Connector C1
Table 20: Park/Neutral Position (PNP) and Backup Lamps Switch Connector C2
Table 21: Throttle Position (TP) Sensor
Table 22: Transmission Input Speed Sensor (TISS)
Table 23: Transmission Output Speed Sensor (TOSS)

Camshaft Position (CMP) Sensor


Object Number: 68730  Size: CH

Connector Part Information

    • 12110293
    • 3 Way F Metri-Pack 150 Series (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 III Fuse

Crankshaft Position (CKP) Sensor


Object Number: 62453  Size: CH

Connector Part Information

    • 12059595
    • 3 Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

PNK

439

Fuse Output-Ignition 1-Type III Fuse

B

PPL

574

Crankshaft Position Sensor Return

C

YEL

573

Crankshaft Position Sensor Signal

Engine Coolant Temperature (ECT) Sensor


Object Number: 232831  Size: CH

Connector Part Information

    • 12162194
    • 2 Way F Metri-Pack 150.2 Series P2S (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

452

Sensor Return

B

YEL

410

Coolant Temperature Sensor Signal

Evaporative Emissions Canister (EVAP) Purge Valve


Object Number: 35437  Size: CH

Connector Part Information

    • 12052643
    • 2 Way F Metri-Pack 150 Series (RED)

Pin

Wire Color

Circuit No.

Function

A

PNK

539

Fuse Output-Ignition 1-Type III Fuse

B

DK GRN /WHT

428

Canister Purge Solenoid Output

Exhaust Gas Recirculation (EGR) Valve


Object Number: 68773  Size: CH

Connector Part Information

    • 12186057
    • 5 Way F Metri-Pack 150.2 Series, P2S (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 Reference

E

RED

1676

Exhaust Gas Recirculation Solenoid Feed

Fuel Pump Module


Object Number: 258300  Size: CH

Connector Part Information

    • 12160482
    • 4 Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

PPL

1589

Fuel Gauge Sensor Signal

B

GRY

120

Fuel Pump Motor Feed

C

BLK

150

Ground

D

BLK

470

Sensor Return

Fuel Pump Relay


Object Number: 39685  Size: CH

Connector Part Information

    • 12110539
    • 5 Way F Metri-Pack 280 Series, Flexlock (BLK)

Pin

Wire Color

Circuit No.

Function

30

GRY

120

Fuel Pump Motor Feed

85

DK GRN /WHT

465

Fuel Pump Relay Feed-Coil

86

BLK

450

Ground

87

ORN

440

Fuse Output-Battery-Type III Fuse

87A

RED

490

Fuel Pump Relay Feed-N.C. Contact-Prime

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1


Object Number: 260852  Size: CH

Connector Part Information

    • 12162102
    • 4 Way M Metri-Pack 150 Series (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

150

Ground

D

PNK

539

Fuse Output-Ignition 1-Type III Fuse

Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1


Object Number: 260852  Size: CH

Connector Part Information

    • 12162102
    • 4 Way M Metri-Pack 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

150

Ground

D

PNK

539

Fuse Output-Ignition 1-Type III Fuse

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2


Object Number: 258300  Size: CH

Connector Part Information

    • 12160482
    • 4 Way F Metri-Pack 150 Series (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

150

Ground

D

PNK

539

Fuse Output-Ignition 1-Type III Fuse

Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2


Object Number: 258300  Size: CH

Connector Part Information

    • 12160482
    • 4 Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

TAN

1671

Oxygen Sensor Return-Right-Rear of Catalytic Converter

B

PPL

1670

Oxygen Sensor Signal-Right-Rear of Catalytic Converter

C

BLK

150

Ground

D

PNK

539

Fuse Output-Ignition 1-Type III Fuse

Idle Air Control (IAC) Valve


Object Number: 38608  Size: CH

Connector Part Information

    • 12162189
    • 4 Way F Metri-Pack 150.2 Series, P2S (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT GRN /BLK

444

Idle Air Control Valve Motor Feed-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

LT BLU /WHT

1747

Idle Air Control Valve Motor Feed-Coil A High

Ignition Coil


Object Number: 68743  Size: CH

Connector Part Information

    • 12146121
    • 3 Way F Metri-Pack 150 Series (BRN)

Pin

Wire Color

Circuit No.

Function

A

PNK

439

Ignition Positive Voltage

B

WHT

121

Tachometer Signal

C

WHT/BLK

1847

Ignition Coil Output

Ignition Control Module (ICM)


Object Number: 38608  Size: CH

Connector Part Information

    • 12162189
    • 4 Way F Metri-Pack 150.2 Series, P2S (BLK)

Pin

Wire Color

Circuit No.

Function

A

PNK

439

Ignition Positive Voltage

B

WHT

423

Ignition Timing Signal

C

BLK

450

Ground

D

WHT/BLK

1847

Ignition Coil Output

Intake Air Temperature (IAT) Sensor


Object Number: 68719  Size: CH

Connector Part Information

    • 12162198
    • 2 Way F Metri-Pack 150.2 Series, P2S (GRY)

Pin

Wire Color

Circuit No.

Function

A

TAN

472

Manifold Absolute Temperature Sensor Signal

B

BLK

470

Sensor Return

Manifold Absolute Pressure (MAP) Sensor


Object Number: 68740  Size: CH

Connector Part Information

    • 12129946
    • 3 Way F Metri-Pack 150 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

BLK

470

Sensor Return

B

LT GRN

432

Manifold Absolute Pressure Sensor Signal

C

GRY

474

Reference Voltage Feed-5 Volt Reference

Mass Air Flow (MAF) Sensor


Object Number: 62453  Size: CH

Connector Part Information

    • 12059595
    • 3 Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

YEL

492

Mass Airflow Sensor Signal

B

BLK

450

Ground

C

PNK

539

Fuse Output-Ignition 1-Type III Fuse

Park/Neutral Position (PNP) Switch Relay


Object Number: 39685  Size: CH

Connector Part Information

    • 12110539
    • 5 Way F Metri-Pack 280 Series Flexlock (BLK)

Pin

Wire Color

Circuit No.

Function

30

DK GRN

909

Output to PNP Relay and Park Brake Pull Button Switch

85

YEL

1737

Transmission Mounted Neutral Safety Switch Output-Park/Neutral

86

BLK

150

Ground

87

--

--

Not Used

87A

YEL/BLK

1131

Auto Apply Park Brake Switch Signal

Park/Neutral Position (PNP) and Backup Lamps Switch Connector C1


Object Number: 68780  Size: CH

Connector Part Information

    • 12129840
    • 7 Way F Metri-Pack 150/280 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

YEL

1737

Transmission Mounted Neutral Safety Switch Output-Park/Neutral

C

PNK

639

Fuse Output-Ignition 1-Type III Fuse

D

--

--

Not Used

E

DK BLU /WHT

805

Ignition Switch Output-Run/Heat/Crank

F

LT GRN

24

Backup Lamp Feed

G

PPL

806

Fuse Output-Crank-Type III Fuse

Park/Neutral Position (PNP) and Backup Lamps Switch Connector C2


Object Number: 40412  Size: CH

Connector Part Information

    • 12191757
    • 4 Way F Metri-Pack 150 Series (NAT)

Pin

Wire Color

Circuit No.

Function

A-B

--

--

Not Used

C

BLK

901

PNP Switch

D

BLK

901

PNP Switch

Throttle Position (TP) Sensor


Object Number: 258299  Size: CH

Connector Part Information

    • 12078090
    • 3 Way F Metri-Pack 150 Series P2S (BLK)

Pin

Wire Color

Circuit No.

Function

A

GRY

416

Reference Voltage Feed-5 Volt Reference

B

BLK

452

Sensor Return

C

DK BLU

417

Throttle Position Sensor Signal

Transmission Input Speed Sensor (TISS)


Object Number: 232831  Size: CH

Connector Part Information

    • 12162194
    • 2 Way F Metri-Pack 150.2 Series P2S (BLK)

Pin

Wire Color

Circuit No.

Function

A

DK BLU /WHT

1231

Transmission Input Speed Sensor Return

B

RED/BLK

1230

Transmission Input Speed Sensor Signal

Transmission Output Speed Sensor (TOSS)


Object Number: 232831  Size: CH

Connector Part Information

    • 12162194
    • 2 Way F Metri-Pack 150.2 Series P2S (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT GRN /BLK

822

Vehicle Speed Sensor Return

B

PPL/WHT

821

Vehicle Speed Sensor Signal