GM Service Manual Online
For 1990-2009 cars only

AF Fuel Injector #1


Object Number: 684833  Size: CH

Connector Part Information

    • 61890553
    • 2 Way F Sumitomo (BLK)

Pin

Wire Color

Circuit No.

Function

A

PNK/RED

8399

Injector Power

B

ORN

5623

Injector Control

AF Fuel Injector #2


Object Number: 684833  Size: CH

Connector Part Information

    • 61890553
    • 2 Way F Sumitomo (BLK)

Pin

Wire Color

Circuit No.

Function

A

PNK/RED

8399

Injector Power

B

YEL

5624

Injector Control

AF Fuel Injector #3


Object Number: 684833  Size: CH

Connector Part Information

    • 61890553
    • 2 Way F Sumitomo (BLK)

Pin

Wire Color

Circuit No.

Function

A

PNK/RED

8399

Injector Power

B

PPL

5625

Injector Control

AF Fuel Injector #4


Object Number: 684833  Size: CH

Connector Part Information

    • 61890553
    • 2 Way F Sumitomo (BLK)

Pin

Wire Color

Circuit No.

Function

A

PNK/RED

8399

Injector Power

B

PNK

5626

Injector Control

AF Fuel Injector #1 Relay


Object Number: 39685  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

30

BLK

1744

PCM Fuel Injector 1 PWM Control

85

BLK

150

Relay Ground

86

PNK/RED

8399

Relay Control

87

BLK

1744

FICM Fuel Injector 1 PWM Input

87A

BLK

1744

Gasoline Fuel Injector 1 Control

AF Fuel Injector #2 Relay


Object Number: 39685  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

30

LT GRN/BLK

1745

PCM Fuel Injector 2 PWM Control

85

BLK

150

Relay Ground

86

PNK/RED

8399

Relay Control

87

LT GRN/BLK

1745

FICM Fuel Injector 2 PWM Input

87A

LT GRN/BLK

1745

Gasoline Fuel Injector 2 Control

AF Fuel Injector #3 Relay


Object Number: 39685  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

30

PNK/BLK

1746

PCM Fuel Injector 3 PWM Control

85

BLK

150

Relay Ground

86

PNK/RED

8399

Relay Control

87

PNK/BLK

1746

FICM Fuel Injector 3 PWM Input

87A

PNK/BLK

1746

Gasoline Fuel Injector 3 Control

AF Fuel Injector #4 Relay


Object Number: 39685  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

30

LT BLU/BLK

844

PCM Fuel Injector 4 PWM Control

85

BLK

150

Relay Ground

86

PNK/RED

8399

Relay Control

87

LT BLU/BLK

844

FICM Fuel Injector 4 PWM Input

87A

LT BLU/BLK

844

Gasoline Fuel Injector 4 Control

Fuel Gage Selector Switch/Fuel Indicator Light Connector


Object Number: 38600  Size: CH

Connector Part Information

    • 12047781
    • 3-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

PPL

5607

Fuel Gage Select Switch Signal

B

LT GRN

5606

Fuel Indicator Light Control

C

PNK

639

Ignition Power

Fuel Rail Pressure (FRP) Sensor


Object Number: 62485  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

BLK

470

Low Reference

B

GRY

474

5 V Reference

C

DK BLU

5622

Sensor Signal

Fuel Rail Temperature (FRT) Sensor


Object Number: 237066  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

BLK

470

Low Reference

B

DK BLU

2712

Sensor Signal

Fuel Tank Pressure (FTP) Sensor Connector


Object Number: 62485  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

TAN

5631

Low Reference

B

GRY

5634

5 V Reference

C

DK GRN/WHT

5633

CNG FTP Signal

Fuel Tank Temperature (FTT) Sensor Connector


Object Number: 236598  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

GRY

5634

5 V Reference

B

DK BLU

929

CNG FTT Signal

High Pressure Lock-off (HPL) Connector


Object Number: 236598  Size: CH

Connector Part Information

    • 12052641
    • 2-Way F Micro Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

PNK

239

Solenoid Power

B

LT BLU

5618

Solenoid Control

Low Pressure Lock-off (LPL) Connector


Object Number: 236598  Size: CH

Connector Part Information

    • 12052641
    • 2-Way F Micro-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

PNK

239

Solenoid Power

B

DK BLU

5617

Solenoid Control

Harness Connector C001


Object Number: 632344  Size: CH

Object Number: 632342  Size: CH

Connector Part Information

    • 15326843
    • 10-Way F GT 150 Series (BLK)

Connector Part Information

    • 15326847
    • 10-Way M GT 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

Pin

Wire Color

Circuit No.

Function

A

PNK/RED

8399

CNG Injector Power

A

PNK/RED

8399

CNG Injector Power

B

PNK/RED

8399

CNG Injector Monitor

B

PNK/RED

8399

CNG Injector Monitor

C

ORN

5623

CNG Fuel Injector 1 Control

C

ORN

5623

CNG Fuel Injector 1 Control

D

YEL

5624

CNG Fuel Injector 2 Control

D

YEL

5624

CNG Fuel Injector 2 Control

E

PPL

5625

CNG Fuel Injector 3 Control

E

PPL

5625

CNG Fuel Injector 3 Control

F

BRN

5626

CNG Fuel Injector 4 Control

F

BRN

5626

CNG Fuel Injector 4 Control

G

DK BLU

2712

CNG Fuel Rail Temperature Signal

G

DK BLU

2712

CNG Fuel Rail Temperature Signal

H

GRY

474

5 V Reference

H

GRY

474

5 V Reference

J

BLK

470

Low Reference

J

BLK

470

Low Reference

K

DK BLU

5622

CNG Fuel Rail Pressure Sensor Signal

K

DK BLU

5622

CNG Fuel Rail Pressure Sensor Signal

Harness Connector C002


Object Number: 697039  Size: CH

Connector Part Information

    • 12052848
    • 6-Way F Metri-Pack 150 Series (BLK)

Connector Part Information

    • 12124107
    • 6-Way M Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

Pin

Wire Color

Circuit No.

Function

A

PNK

239

HPL Solenoid Power

A

PNK

239

HPL Solenoid Power

B

LT BLU

5618

HPL Solenoid Control

B

LT BLU

5618

HPL Solenoid Control

C

DK GRN/WHT

5633

CNG Fuel Tank Pressure (FTP) Sensor Signal

C

DK GRN/WHT

931

CNG Fuel Tank Pressure (FTP) Sensor Signal

D

GRY

5634

CNG Fuel Tank Pressure (FTP) Sensor 5 V Reference

D

GRY

5634

CNG Fuel Tank Pressure (FTP) Sensor 5 V Reference

E

TAN

5631

Low Reference

E

TAN

5631

Low Reference

F

DK BLU

5632

CNG Fuel Tank Temperature (FTT) Sensor Signal

F

DK BLU

5632

CNG Fuel Tank Temperature (FTT) Sensor Signal

Harness Connector C003


Object Number: 684807  Size: CH

Object Number: 655690  Size: CH

Connector Part Information

    • 12110293
    • 3-Way F Metri-Pack 150 Series (BLK)

Connector Part Information

    • 12129615
    • 3-Way M Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

Pin

Wire Color

Circuit No.

Function

A

PPL

5607

Fuel Gage Selector Switch Input

A

PPL

5607

Fuel Gage Selector Switch Input

B

LT GRN

5606

Fuel Indicator Light Control

B

LT GRN

5606

Fuel Indicator Light Control

C

PNK

639

Ignition Power

C

PNK

639

Ignition Power

Harness Connector C004


Object Number: 697039  Size: CH

Connector Part Information

    • 12052848
    • 6-Way F Metri-Pack 150 Series (BLK)

Connector Part Information

    • 12124107
    • 6-Way M Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

Pin

Wire Color

Circuit No.

Function

A

PNK

239

HPL Solenoid Power

A

PNK

239

HPL Solenoid Power

B

LT BLU

5618

HPL Solenoid Control

B

LT BLU

5618

HPL Solenoid Control

C

DK GRN/WHT

5633

CNG Fuel Tank Pressure (FTP) Sensor Signal

C

DK GRN/WHT

931

CNG Fuel Tank Pressure (FTP) Sensor Signal

D

GRY

5634

CNG Fuel Tank Pressure (FTP) Sensor 5 V Reference

D

GRY

5634

CNG Fuel Tank Pressure (FTP) Sensor 5 V Reference

E

TAN

5631

Low Reference

E

TAN

5631

Low Reference

F

DK BLU

5632

CNG Fuel Tank Temperature (FTT) Sensor Signal

F

DK BLU

5632

CNG Fuel Tank Temperature (FTT) Sensor Signal

Harness Connector C005


Object Number: 362724  Size: CF

Connector Part Information

    • 12015791
    • 1-Way F Weather Pack (BLK)

Connector Part Information

    • 12010996
    • 1-Way M Weather Pack (BLK)

Pin

Wire Color

Circuit No.

Function

Pin

Wire Color

Circuit No.

Function

--

PNK

239

HPL Solenoid Power

--

PNK

239

HPL Solenoid Power