GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Sierra Classic - 4WD 🢒 Power and Signal Distribution 🢒 Wiring Systems and Power Management 🢒 Engine Controls Connector End Views
Connector 1: Camshaft Position (CMP) Sensor
Connector 2: Central Sequential Fuel Injection (Central SFI)
Connector 3: Crankshaft Position (CKP) Sensor
Connector 4: Engine Coolant Temperature (ECT) Sensor
Connector 5: Evaporative Emission (EVAP) Canister Purge Solenoid
Connector 6: Evaporative Emission (EVAP) Canister Vent Solenoid
Connector 7: Fuel Tank Pressure (FTP) Sensor
Connector 8: Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1
Connector 9: Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2
Connector 10: Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
Connector 11: Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2
Connector 12: Idle Air Control (IAC) Valve
Connector 13: Ignition Coil
Connector 14: Ignition Control Module (ICM)
Connector 15: Knock Sensor (KS)
Connector 16: Manifold Absolute Pressure (MAP) Sensor
Connector 17: Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor
Connector 18: Throttle Position (TP) Sensor

Camshaft Position (CMP) Sensor
Object Number: 684807 Size: CH

Connector Part Information

  • OEM: 12110293
  • Service: 12117025
  • Description: 3-Way F Metri-Pack 150 Series (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Camshaft Position (CMP) Sensor

Pin

Wire Color

Circuit No.

Function

A

PK/BK

632

Low Reference

B

BN/WH

633

CMP Sensor Signal

C

RD

631

12-Volt Reference

Central Sequential Fuel Injection (Central SFI)
Object Number: 39782 Size: CH

Connector Part Information

  • OEM: 12177083
  • Service: 12167140
  • Description: 12-Way F Micro-Pack 100 Series (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Central Sequential Fuel Injection (Central SFI)

Pin

Wire Color

Circuit No.

Function

A

BK/WH

845

Fuel Injector 5 Control

B

PK

1039

Ignition 1 Voltage

C

PK/BK

1746

Fuel Injector 3 Control

D

PK

1039

Ignition 1 Voltage

E

PK

1039

Ignition 1 Voltage

F

BK

1744

Fuel Injector 1 Control

G

L-GN/BK

1745

Fuel Injector 2 Control

H

PK

1239

Ignition 1 Voltage

J

PK

1239

Ignition 1 Voltage

K

L-BU/BK

844

Fuel Injector 4 Control

L

PK

1239

Ignition 1 Voltage

M

YE/BK

846

Fuel Injector 6 Control

Crankshaft Position (CKP) Sensor
Object Number: 516611 Size: CH

Connector Part Information

  • OEM: 12059595
  • Service: 88986451
  • Description: 3-Way F Metri-Pack 150 Series (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Crankshaft Position (CKP) Sensor

Pin

Wire Color

Circuit No.

Function

A

L-GN

1867

12-Volt Reference

B

YE/BK

1868

Low Reference

C

D-BU/WH

1869

CKP Sensor Signal

Engine Coolant Temperature (ECT) Sensor
Object Number: 1538760 Size: CH

Connector Part Information

  • OEM: 15449028
  • Service: 88987978
  • Description: 2-Way F GT 150 Series Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 15326267/19
  • Core/Insulation Crimp: E/4
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)

Engine Coolant Temperature (ECT) Sensor

Pin

Wire Color

Circuit No.

Function

A

BK

407

Low Reference

B

YE

410

ECT Sensor Signal

Evaporative Emission (EVAP) Canister Purge Solenoid
Object Number: 684795 Size: CH

Connector Part Information

  • OEM: 12052643
  • Service: 12101858
  • Description: 2-Way F Metri-Pack 150 Series Sealed (RD)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Evaporative Emission (EVAP) Canister Purge Solenoid

Pin

Wire Color

Circuit No.

Function

A

PK

439

Ignition 1 Voltage

B

D-GN/WH

428

EVAP Canister Purge Solenoid Control

Evaporative Emission (EVAP) Canister Vent Solenoid
Object Number: 684795 Size: CH

Connector Part Information

  • OEM: 12052643
  • Service: 12101858
  • Description: 2-Way F Metri-Pack 150 Series Sealed (RD)

Terminal Part Information

  • Terminal/Tray: 12048074/2
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094429/J-35616-2A (GY)

Evaporative Emission (EVAP) Canister Vent Solenoid

Pin

Wire Color

Circuit No.

Function

A

WH

1310

EVAP Canister Vent Solenoid Control

B

PK

2640

Battery Positive Voltage

Fuel Tank Pressure (FTP) Sensor
Object Number: 516611 Size: CH

Connector Part Information

  • OEM: 12059595
  • Service: 88986451
  • Description: 3-Way F Metri-Pack 150 Series Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 12048074/2
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094429/J-35616-2A (GY)

Fuel Tank Pressure (FTP) Sensor

Pin

Wire Color

Circuit No.

Function

A

BK

470

Low Reference

B

D-GN

890

Fuel Tank Pressure Sensor Signal

C

GY

474

5-Volt Reference

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1
Object Number: 806613 Size: CH

Connector Part Information

  • OEM: 15326423
  • Service: See Catalog
  • Description: 4-Way F Metri-Pack 150 Series (BK)

Terminal Part Information

  • Terminal/Tray: 12045773/2
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094429/J-35616-3 (GY)

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1

Pin

Wire Color

Circuit No.

Function

A

TN

1664

HO2S Low Signal - Bank 1 Sensor 1

B

PU/WH

1665

HO2S High Signal - Bank 1 Sensor 1

C

BK/WH

3113

HO2S Heater Low Control - Bank 1 Sensor 1

D

PK

539

Ignition 1 Voltage

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2
Object Number: 806613 Size: CH

Connector Part Information

  • OEM: 15326423
  • Service: See Catalog
  • Description: 4-Way F Metri-Pack 150 Series (BK)

Terminal Part Information

  • Terminal/Tray: 12045773/2
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094429/J-35616-3 (GY)

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2

Pin

Wire Color

Circuit No.

Function

A

TN/WH

1669

HO2S Low Signal - Bank 1 Sensor 2

B

PU/WH

1668

HO2S High Signal - Bank 1 Sensor 2

C

BN

2391

HO2S Heater Low Control - Bank 1 Sensor 2

D

PK

1539

Ignition 1 Voltage

Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
Object Number: 806613 Size: CH

Connector Part Information

  • OEM: 15326423
  • Service: See Catalog
  • Description: 4-Way F Metri-Pack 150 Series (BK)

Terminal Part Information

  • Terminal/Tray: 12045773/2
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094429/J-35616-3 (GY)

Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1

Pin

Wire Color

Circuit No.

Function

A

TN

1667

HO2S Low Signal - Bank 2 Sensor 1

B

PU

1666

HO2S High Signal - Bank 2 Sensor 1

C

L-GN

3212

HO2S Heater Low Control - Bank 2 Sensor 1

D

PK

539

Ignition 1 Voltage

Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2
Object Number: 806613 Size: CH

Connector Part Information

  • OEM: 15326423
  • Service: See Catalog
  • Description: 4-Way F Metri-Pack 150 Series (BK)

Terminal Part Information

  • Terminal/Tray: 12045773/2
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094429/J-35616-3 (GY)

Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2

Pin

Wire Color

Circuit No.

Function

A

TN

1671

HO2S Low Signal - Bank 2 Sensor 2

B

PU

1670

HO2S High Signal - Bank 2 Sensor 2

C

RD/WH

3223

HO2S Heater Low Control - Bank 2 Sensor 2

D

PK

1539

Ignition 1 Voltage

Idle Air Control (IAC) Valve
Object Number: 684948 Size: CH

Connector Part Information

  • OEM: 15354716
  • Service: 15306397
  • Description: 4-Way F GT 150 Series Sealed (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Idle Air Control (IAC) Valve

Pin

Wire Color

Circuit No.

Function

A

L-GN/BK

444

IAC Coil B Low Control

B

L-GN/WH

1749

IAC Coil B High Control

C

L-BU/BK

1748

IAC Coil A Low Control

D

L-B/WH

1747

IAC Coil A High Control

Ignition Coil
Object Number: 68743 Size: CH

Connector Part Information

  • OEM: 12146121
  • Service: 88987992
  • Description: 3-Way F Metri-Pack 150 Series (BN)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Ignition Coil

Pin

Wire Color

Circuit No.

Function

A

PK

1239

Ignition 1 Voltage

B

--

--

Not Used

C

WH/BK

1847

Ignition Coil Control

Ignition Control Module (ICM)
Object Number: 684948 Size: CH

Connector Part Information

  • OEM: 15354716
  • Service: 15306397
  • Description: 4-Way F GT 150 Series Sealed (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Ignition Control Module (ICM)

Pin

Wire Color

Circuit No.

Function

A

PK

1039

Ignition 1 Voltage

B

WH

423

IC Timing Control

C

BK

550

Ground

D

WH/BK

1847

Ignition Coil Control

Knock Sensor (KS)
Object Number: 684804 Size: CH

Connector Part Information

  • OEM: 12110179
  • Service: 12085491
  • Description: 2-Way F Metri-Pack 280 Series .1 P2S (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Knock Sensor (KS)

Pin

Wire Color

Circuit No.

Function

A

D-BU

496

KS Signal

B

GY

1716

KS Signal

Manifold Absolute Pressure (MAP) Sensor
Object Number: 684840 Size: CH

Connector Part Information

  • OEM: 12129946
  • Service: 88987997
  • Description: 3-Way F Metri-Pack 150 Series Sealed (GY)

Terminal Part Information

  • Terminal/Tray: 12048074/2
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094429/J-35616-2A (GY)

Manifold Absolute Pressure (MAP) Sensor

Pin

Wire Color

Circuit No.

Function

A

OG/BK

469

Low Reference

B

L-GN

432

MAP Sensor Signal

C

GY

597

5-Volt Reference

Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor
Object Number: 366067 Size: CH

Connector Part Information

  • OEM: 15305555
  • Service: 15306113
  • Description: 5-Way F Metri-Pack 150 Series (BK)

Terminal Part Information

  • Terminal/Tray: 15326267/19
  • Core/Insulation Crimp: E/4
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)

Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor

Pin

Wire Color

Circuit No.

Function

A

BK

552

Low Reference

B

TN

472

IAT Sensor Signal

C

BK/WH

451

Ground

D

PK

439

Ignition 1 Voltage

E

YE

492

MAF Sensor Signal

Throttle Position (TP) Sensor
Object Number: 726824 Size: CH

Connector Part Information

  • OEM: 15344137
  • Service: 88988301
  • Description: 3-Way F GT 150 Series (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Throttle Position (TP) Sensor

Pin

Wire Color

Circuit No.

Function

1

GY

2701

5-Volt Reference

2

BK

2752

Low Reference

3

D-BU

417

TP Sensor Signal