GM Service Manual Online
For 1990-2009 cars only
Connector 1: Accelerator Pedal Position (APP) Sensor
Connector 2: Camshaft Position (CMP) Sensor
Connector 3: Central Sequential Fuel Injection (SFI) X1-X6
Connector 4: Central Sequential Fuel Injection (SFI) X7
Connector 5: Crankshaft Position (CKP) Sensor
Connector 6: Engine Coolant Temperature (ECT) Sensor
Connector 7: Evaporative Emission (EVAP) Canister Purge Solenoid Valve
Connector 8: Evaporative Emission (EVAP) Canister Vent Solenoid Valve
Connector 9: Fuel Injector 1
Connector 10: Fuel Injector 2
Connector 11: Fuel Injector 3
Connector 12: Fuel Injector 4
Connector 13: Fuel Injector 5
Connector 14: Fuel Injector 6
Connector 15: Fuel Tank Pressure (FTP) Sensor
Connector 16: Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1
Connector 17: Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2
Connector 18: Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
Connector 19: Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2
Connector 20: Ignition Control Module (ICM)
Connector 21: Knock Sensor (KS) - 1
Connector 22: Knock Sensor (KS) - 2
Connector 23: Manifold Absolute Pressure (MAP) Sensor
Connector 24: Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor
Connector 25: Throttle Body

Accelerator Pedal Position (APP) Sensor


Object Number: 886053  Size: CH

Connector Part Information

  • OEM: 15326830
  • Service: 88953153
  • Description: 6-Way F GT 150 (BK)

Terminal Part Information

  • Terminal/Tray: 12191819/8
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)

Accelerator Pedal Position (APP) Sensor

Pin

Wire Color

Circuit No.

Function

A

0.35 PU

1272

Low Reference

B

0.35 L-BU

1162

APP Sensor 2 Signal

C

0.35 TN

1274

5-Volt Reference

D

0.35 WH/BK

1164

5-Volt Reference

E

0.35 D-BU

1161

APP Sensor 1 Signal

F

0.35 BN

1271

Low Reference

Camshaft Position (CMP) Sensor


Object Number: 646415  Size: CH

Connector Part Information

  • OEM: 15326808
  • Service: 15306388
  • Description: 3-Way F GT 150 Series, Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 12191819/8
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)

Camshaft Position (CMP) Sensor

Pin

Wire Color

Circuit No.

Function

A

0.35 RD

6259

5-Volt Reference

B

0.35 PK

6266

Low Reference

C

0.35 TN/WH

6265

CMP Sensor Signal

Central Sequential Fuel Injection (SFI) X1-X6


Object Number: 1903781  Size: CH

Connector Part Information

  • OEM: 12597538 Part 2
  • Service: 12603371
  • Description: 2-Way F 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

Central Sequential Fuel Injection (SFI) X1-X6

Pin

Wire Color

Circuit No.

Function

X1-1

0.5 BK

1744

Fuel Injector 1 Control

X1-2

0.5 BK

1839

Ignition 1 Voltage

X2-1

0.5 BK

1745

Fuel Injector 2 Control

X2-2

0.5 BK

1839

Ignition 1 Voltage

X3-1

0.5 BK

1746

Fuel injector 3 Control

X3-2

0.5 BK

1839

Ignition 1 Voltage

X4-1

0.5 BK

844

Fuel Injector 4 Control

X4-2

0.5 BK

1839

Ignition 1 Voltage

X5-1

0.5 BK

845

Fuel Injector 5 Control

X5-2

0.5 BK

1839

Ignition 1 Voltage

X6-1

0.5 BK

846

Fuel Injector 6 Control

X6-2

0.5 BK

1839

Ignition 1 Voltage

Central Sequential Fuel Injection (SFI) X7


Object Number: 1903780  Size: CH

Connector Part Information

  • OEM: 12597538 Part 1
  • Service: 12603371
  • Description: 12-Way F Micro-Pack 100 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

Central Sequential Fuel Injection (SFI) X7

Pin

Wire Color

Circuit No.

Function

A

0.5 TN/WH

845

Fuel Injector 5 Control

B

0.5 PK

1839

Ignition 1 Voltage

C

0.5 PK/BK

1746

Fuel Injector 3 Control

D

0.5 PK

1839

Ignition 1 Voltage

E

0.5 PK

1839

Ignition 1 Voltage

F

0.5 TN

1744

Fuel Injector 1 Control

G

0.5 L-GN/BK

1745

Fuel Injector 2 Control

H

0.5 PK

1839

Ignition 1 Voltage

J

0.5 PK

1839

Ignition 1 Voltage

K

0.5 L-BU/BK

844

Fuel Injector 4 Control

L

0.5 PK

1839

Ignition 1 Voltage

M

0.5 YE/BK

846

Fuel Injector 6 Control

Crankshaft Position (CKP) Sensor


Object Number: 1290302  Size: CH

Connector Part Information

  • OEM: 13544000
  • Service: 19179280
  • Description: 3-Way F 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

Crankshaft Position (CKP) Sensor

Pin

Wire Color

Circuit No.

Function

1

0.35 PU/WH

6270

5-Volt Reference

2

0.35 GY/BK

6272

Low Reference

3

0.35 WH/BK

6271

CKP Sensor Signal

Engine Coolant Temperature (ECT) Sensor


Object Number: 1538760  Size: CH

Connector Part Information

  • OEM: 15449028
  • Service: 88987993
  • Description: 2-Way F 150 GT 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

0.5 TN

2761

Low Reference

B

0.5 YE

410

ECT Sensor Signal

Evaporative Emission (EVAP) Canister Purge Solenoid Valve


Object Number: 684829  Size: CH

Connector Part Information

  • OEM: 12124037
  • Service: 12101858
  • Description: 2-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)

Evaporative Emission (EVAP) Canister Purge Solenoid Valve

Pin

Wire Color

Circuit No.

Function

A

0.5 PK/BK

1339

Ignition 1 Voltage

B

0.5 D-GN/WH

428

EVAP Canister Purge Solenoid Control

Evaporative Emission (EVAP) Canister Vent Solenoid Valve


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 Valve

Pin

Wire Color

Circuit No.

Function

A

0.5 WH

1310

EVAP Canister Vent Solenoid Control

B

0.5 RD/WH

1840

Battery Positive Voltage

Fuel Injector 1


Object Number: 366123  Size: CH

Connector Part Information

  • OEM: 15326181
  • Service: 15306160
  • Description: 2-Way F Micro-Pack 064 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

Fuel Injector 1

Pin

Wire Color

Circuit No.

Function

A

0.5 BK

1744

Fuel Injector 1 Control

B

0.5 BK

1839

Ignition 1 Voltage

Fuel Injector 2


Object Number: 366123  Size: CH

Connector Part Information

  • OEM: 15326181
  • Service: 15306160
  • Description: 2-Way F Micro-Pack 064 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

Fuel Injector 2

Pin

Wire Color

Circuit No.

Function

A

0.5 BK

1745

Fuel Injector 2 Control

B

0.5 BK

1839

Ignition 1 Voltage

Fuel Injector 3


Object Number: 366123  Size: CH

Connector Part Information

  • OEM: 15326181
  • Service: 15306160
  • Description: 2-Way F Micro-Pack 064 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

Fuel Injector 3

Pin

Wire Color

Circuit No.

Function

A

0.5 BK

1746

Fuel Injector 3 Control

B

0.5 BK

1839

Ignition 1 Voltage

Fuel Injector 4


Object Number: 366123  Size: CH

Connector Part Information

  • OEM: 15326181
  • Service: 15306160
  • Description: 2-Way F Micro-Pack 064 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

Fuel Injector 4

Pin

Wire Color

Circuit No.

Function

A

0.5 BK

844

Fuel Injector 4 Control

B

0.5 BK

1839

Ignition 1 Voltage

Fuel Injector 5


Object Number: 366123  Size: CH

Connector Part Information

  • OEM: 15326181
  • Service: 15306160
  • Description: 2-Way F Micro-Pack 064 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

Fuel Injector 5

Pin

Wire Color

Circuit No.

Function

A

0.5 BK

845

Fuel Injector 5 Control

B

0.5 BK

1839

Ignition 1 Voltage

Fuel Injector 6


Object Number: 366123  Size: CH

Connector Part Information

  • OEM: 15326181
  • Service: 15306160
  • Description: 2-Way F Micro-Pack 064 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

Fuel Injector 6

Pin

Wire Color

Circuit No.

Function

A

0.5 BK

846

Fuel Injector 6 Control

B

0.5 BK

1839

Ignition 1 Voltage

Fuel Tank Pressure (FTP) Sensor


Object Number: 516611  Size: CH

Connector Part Information

  • OEM: 12059595
  • Service: Service by Harness - See Part Catalog
  • 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-35616-14 (GN)

Fuel Tank Pressure (FTP) Sensor

Pin

Wire Color

Circuit No.

Function

A

0.5 TN/BK

6049

Low Reference

B

0.5 D-GN

890

Fuel Tank Pressure Sensor Signal

C

0.5 GY

2709

5-Volt Reference

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1


Object Number: 280761  Size: CH

Connector Part Information

  • OEM: 12160825
  • Service: 15305801
  • Description: 4-Way M Metri-Pack 150 Series Sealed (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

0.5 TN

1664

HO2S Low Signal Bank 1 Sensor 1

B

0.5 PU/WH

1665

HO2S High Signal Bank 1 Sensor 1

C

0.5 GY/WH

3113

HO2S Heater Low Control Bank 1 Sensor 1

D

0.5 PK

539

Ignition 1 Voltage

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2


Object Number: 518981  Size: CH

Connector Part Information

  • OEM: 12160482
  • Service: 88988598
  • Description: 4-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-35616-14 (GY)

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2

Pin

Wire Color

Circuit No.

Function

A

0.5 TN/WH

1669

HO2S Low Signal Bank 1 Sensor 2

B

0.5 PU/WH

1668

HO2S High Signal Bank 1 Sensor 2

C

0.5 GY/WH

3122

HO2S Heater Low Control Bank 1 Sensor 2

D

0.5 PK

1539

Ignition 1 Voltage

Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1


Object Number: 280761  Size: CH

Connector Part Information

  • OEM: 12160825
  • Service: 15305801
  • Description: 4-Way M Metri-Pack 150 Series Sealed (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

0.5 TN

1667

HO2S Low Signal Bank 2 Sensor 1

B

0.5 PU

1666

HO2S High Signal Bank 2 Sensor 1

C

0.5 L-GN

3212

HO2S Heater Low Control Bank 2 Sensor 1

D

0.5 PK

539

Ignition 1 Voltage

Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2


Object Number: 518981  Size: CH

Connector Part Information

  • OEM: 12160482
  • Service: 88988598
  • Description: 4-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-35616-14 (GN)

Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2

Pin

Wire Color

Circuit No.

Function

A

0.5 TN

1671

HO2S Low Signal Bank 2 Sensor 2

B

0.5 PU

1670

HO2S High Signal Bank 2 Sensor 2

C

0.5 OG/WH

3223

HO2S Heater Low Control Bank 2 Sensor 2

D

0.5 PK

1539

Ignition 1 Voltage

Ignition Control Module (ICM)


Object Number: 632357  Size: CH

Connector Part Information

  • OEM: 15326829
  • Service: 88988944
  • Description: 6-Way F GT 150 Series, Sealed (BK)

Terminal Part Information

  • Pins: A-D
  • Terminal/Tray: 12191819/8
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)
  • Pins: E-F
  • Terminal/Tray: 12191819/8
  • Core/Insulation Crimp: 2/A
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)

Ignition Control Module (ICM)

Pin

Wire Color

Circuit No.

Function

A

0.5 OG/WH

2122

IC 2 Control

B

0.5 PU

2121

IC 1 Control

C

0.5 L-BU

2123

IC 3 Control

D

0.5 BN

2129

Low Reference

E

0.8 BK

350

Ground

F

0.8 PK

1039

Ignition 1 Voltage

Knock Sensor (KS) - 1


Object Number: 1232999  Size: CH

Connector Part Information

  • OEM: 15374222
  • Service: 88953268
  • Description: 2-Way F GT 150 Sealed (WH)

Terminal Part Information

  • Terminal/Tray: 15326427/5
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)

Knock Sensor (KS) - 1

Pin

Wire Color

Circuit No.

Function

A

0.5 D-BU

496

KS 1 Signal

B

0.5 GY

1716

KS 1 Signal

Knock Sensor (KS) - 2


Object Number: 1232999  Size: CH

Connector Part Information

  • OEM: 15374222
  • Service: 88953268
  • Description: 2-Way F GT 150 Sealed (WH)

Terminal Part Information

  • Terminal/Tray: 15326427/5
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)

Knock Sensor (KS) - 2

Pin

Wire Color

Circuit No.

Function

A

0.5 L-BU

1876

KS 2 Signal

B

0.5 GY

2303

KS 2 Signal

Manifold Absolute Pressure (MAP) Sensor


Object Number: 1331443  Size: CH

Connector Part Information

  • OEM: 15365614
  • Service: 88988583
  • Description: 3-Way F Kompakt 2.8 Series, Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 1928498056/8
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: J-38125-561/J-35616-35 (VT)

Manifold Absolute Pressure (MAP) Sensor

Pin

Wire Color

Circuit No.

Function

1

0.5 GY

2704

5-Volt Reference

2

0.5 OG/BK

469

Low Reference

3

0.5 L-GN

432

MAP Sensor Signal

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


Object Number: 647974  Size: CH

Connector Part Information

  • OEM: 15326822
  • Service: 88987186
  • Description: 5-Way F GT 150 Sealed 4.0 (BK)

Terminal Part Information

  • Terminal/Tray: 12191819/8
  • Core/Insulation Crimp: E/A
  • 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

0.5 YE

492

MAF Sensor Signal

B

0.5 PK

1339

Ignition 1 Voltage

C

0.5 BK/WH

451

Ground

D

0.5 TN

472

IAT Sensor Signal

E

0.5 TN

2760

Low Reference

Throttle Body


Object Number: 1664617  Size: CH

Connector Part Information

  • OEM: 15355297
  • Service: 88988106
  • Description: 6-Way F GT 150 Series, Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 12191819/8
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)

Throttle Body

Pin

Wire Color

Circuit No.

Function

A

0.5 BN

582

TAC Motor Control - 2

B

0.5 YE

581

TAC Motor Control - 1

C

0.35 TN

2752

Low Reference

D

0.35 D-GN

485

TP Sensor 1 Signal

E

0.35 GY

2701

5-Volt Reference

F

0.35 PU

486

TP Sensor 2 Signal