GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 Express (CNG) 🢒 Engine 🢒 Engine Controls - 6.0L 🢒 Engine Controls Connector End Views
Table 1: C001
Table 2: C002
Table 3: C003
Table 4: C004
Table 5: C005
Table 6: C006
Table 7: Fuel Rail Pressure Sensor
Table 8: AF Fuel Injector #1
Table 9: AF Fuel Injector #2
Table 10: AF Fuel Injector #3
Table 11: AF Fuel Injector #4
Table 12: AF Fuel Injector #5
Table 13: AF Fuel Injector #6
Table 14: AF Fuel Injector #7
Table 15: AF Fuel Injector #8
Table 16: Low Pressure Lock-Off Relay
Table 17: Low Pressure Lock-Off Solenoid
Table 18: High Pressure Lock-Off Solenoid
Table 19: Fuel Tank Temperature Sensor
Table 20: AF Fuel Tank Pressure Sensor
Table 21: Fuel Gage Select Switch

C001


Object Number: 130736 Size: CF

Connector Part Information
    • 12160542
    • 20-Way M Micro Pack 100W Series (GY)

Connector Part Information
    • 12186609
    • 20-Way F Micro Pack 100W Series (GY)

Pin

Wire Color

Circuit No.

Function

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

A

--

--

Not Used

B

OR

5619

LPL Ignition Voltage

B

OR

5619

LPL Ignition Voltage

C

TN

1744

Fuel Injector 1 Signal

C

TN

1744

Fuel Injector 1 Signal

D

L-GN/BK

1745

Fuel Injector 2 Signal

D

L-GN/BK

1745

Fuel Injector 2 Signal

E

PK/BK

1746

Fuel Injector 3 Signal

E

PK/BK

1746

Fuel Injector 3 Signal

F

L-BU/BK

844

Fuel Injector 4 Signal

F

L-BU/BK

844

Fuel Injector 4 Signal

G

TN/WH

845

Fuel Injector 5 Signal

G

TN/WH

845

Fuel Injector 5 Signal

H

YE/BK

846

Fuel Injector 6 Signal

H

YE/BK

846

Fuel Injector 6 Signal

J

OR/BK

877

Fuel Injector 7 Signal

J

OR/BK

877

Fuel Injector 7 Signal

K

D-BU/WH

878

Fuel Injector 8 Signal

K

D-BU/WH

878

Fuel Injector 8 Signal

L

BK/WH

1551

Ground

L

BK/WH

1551

Ground

M

D-BU/WH

5695

FRT PWM Output

M

D-BU/WH

5695

FRT PWM Output

N

PK/BK

5605

FICM Diagnostic

N

PK/BK

5605

FICM Diagnostic

P

PK

1020

FICM Ignition 0 Voltage

P

PK

1020

FICM Ignition 0 Voltage

R

YE

5269

FRT Signal

R

YE

5269

FRT Signal

S

TN

476

Low Reference

S

TN

476

Low Reference

T

OR

5623

CNG Fuel Injector 1 Control

T

OR

5623

CNG Fuel Injector 1 Control

U

PU

5625

CNG Fuel Injector 3 Control

U

PU

5625

CNG Fuel Injector 3 Control

V

YE

5624

CNG Fuel Injector 2 Control

V

YE

5624

CNG Fuel Injector 2 Control

W

BN

5626

CNG Fuel Injector 4 Control

W

BN

5626

CNG Fuel Injector 4 Control

C002


Object Number: 130736 Size: CF

Connector Part Information
    • 12160542
    • 20-Way M Micro Pack 100W Series (GY)

Connector Part Information
    • 12186609
    • 20-Way F Micro Pack 100W Series (GY)

Pin

Wire Color

Circuit No.

Function

Pin

Wire Color

Circuit No.

Function

A

PK

639

Igntion Voltage

A

PK

639

Ignition Voltage

B

D-BU

5617

LPL Relay Control

B

D-BU

5617

LPL Relay Control

C

TN

1744

Gasoline Fuel Injector 1 Control

C

TN

1744

Gasoline Fuel Injector 1 Control

D

L-GN/BK

1745

Gasoline Fuel Injector 2 Control

D

L-GN/BK

1745

Gasoline Fuel Injector 2 Control

E

PK/BK

1746

Gasoline Fuel Injector 3 Control

E

PK/BK

1746

Gasoline Fuel Injector 3 Control

F

L-BU/BK

844

Gasoline Fuel Injector 4 Control

F

L-BU/BK

844

Gasoline Fuel Injector 4 Control

G

TN/WH

845

Gasoline Fuel Injector 5 Control

G

TN/WH

845

Gasoline Fuel Injector 5 Control

H

YE/BK

846

Gasoline Fuel Injector 6 Control

H

YE/BK

846

Gasoline Fuel Injector 6 Control

J

OR/BK

877

Gasoline Fuel Injector 7 Control

J

OR/BK

877

Gasoline Fuel Injector 7 Control

K

D-BU/WH

878

Gasoline Fuel Injector 8 Control

K

D-BU/WH

878

Gasoline Fuel Injector 8 Control

L

YE/BK

5694

FRP PWM Output

L

YE/BK

5694

FRP PWM Output (w/o JL4)

M

GY

474

5-Volt Reference

M

GY

474

5-Volt Reference (w/o JL4)

N

BK/WH

1551

Ground

N

BK/WH

1551

Ground

P

--

--

Not Used

P

--

--

Not Used

R

D-BU

5622

FRP Signal

R

D-BU

5622

FRP Signal (w/o JL4)

S

OR

2531

AFO Enable

S

OR

2531

AFO Enable

T

L-GN

5627

CNG Fuel Injector 5 Control

T

L-GN

5627

CNG Fuel Injector 5 Control

U

D-BU

5629

CNG Fuel Injector 7 Control

U

D-BU

5629

CNG Fuel Injector 7 Control

V

L-BU

5628

CNG Fuel Injector 6 Control

V

L-BU

5628

CNG Fuel Injector 6 Control

W

D-GN

5630

CNG Fuel Injector 8 Control

W

D-GN

5630

CNG Fuel Injector 8 Control

C003


Object Number: 632349 Size: CH

Object Number: 523630 Size: CH

Connector Part Information
    • 15326806
    • 2-Way M Sealed 150 Series (BK)

Connector Part Information
    • 15326801
    • 2-Way F Sealed 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

Pin

Wire Color

Circuit No.

Function

A

L-GN

5606

FIL Control

A

L-GN

5606

FIL Control

B

PU

5607

Fuel Gage Select Switch Signal

B

PU

5607

Fuel Gage Select Switch Signal

C004


Object Number: 684916 Size: CH

Object Number: 646400 Size: CH

Connector Part Information
    • 15326840
    • 8-Way M GT 150 Sealed 4.0 (BK)

Connector Part Information
    • 15326835
    • 8-Way F GT 150 Sealed 4.0 (BK)

Pin

Wire Color

Circuit No.

Function

Pin

Wire Color

Circuit No.

Function

A

OR/BK

5620

HPL Ignition Voltage -- Rear Tanks

A

OR/BK

5620

HPL Ignition Voltage -- Rear Tanks

B

OR

5621

HPL Ignition Voltage -- Mid-frame Tank (KL8)

B

OR

5621

HPL Ignition Voltage -- Mid-frame Tank (KL8)

C

D-BU

5632

FTT Sensor Signal

C

D-BU

5632

FTT Sensor Signal

D

TN

5631

Low Reference

D

BK/WH

1551

Low Reference

E

D-GN/WH

5633

FTP Sensor Signal

E

D-GN/WH

5633

FTP Sensor Signal

F

GY

5634

5-Volt Reference

F

GY

5634

5-Volt Reference

G

BK

1250

HPL Solenoid Ground

G

BK

1250

HPL Solenoid Ground

H

--

--

Not Used

H

--

--

Not Used

C005


Object Number: 831369 Size: CH

Object Number: 831372 Size: CH

Connector Part Information
    • 15326854
    • 12-Way M GT 150 Sealed 4.0 (BK)

Connector Part Information
    • 15326849
    • 12-Way F GT 150 Sealed 4.0 (BK)

Pin

Wire Color

Circuit No.

Function

Pin

Wire Color

Circuit No.

Function

A

TN

1744

Gasoline Fuel Injector 1 Control

A

TN

1744

Gasoline Fuel Injector 1 Control

B

PK/BK

1746

Gasoline Fuel Injector 3 Control

B

PK/BK

1746

Gasoline Fuel Injector 3 Control

C

TN/WH

845

Gasoline Fuel Injector 5 Control

C

TN/WH

845

Gasoline Fuel Injector 5 Control

D

OR/BK

877

Gasoline Fuel Injector 7 Control

D

OR/BK

877

Gasoline Fuel Injector 7 Control

E

PK

139

Ignition Voltage

E

PK

139

Ignition Voltage

F

PK

139

Ignition Voltage

F

PK

139

Ignition Voltage

G

PK

139

Ignition Voltage

G

PK

139

Ignition Voltage

H

PK

139

Ignition Voltage

H

PK

139

Ignition Voltage

J

OR

5623

CNG Fuel Injector 1 Control

J

OR

5623

CNG Fuel Injector 1 Control

K

PU

5625

CNG Fuel Injector 3 Control

K

PU

5625

CNG Fuel Injector 3 Control

L

L-GN

5627

CNG Fuel Injector 5 Control

L

L-GN

5627

CNG Fuel Injector 5 Control

M

D-BU

5629

CNG Fuel Injector 7 Control

M

D-BU

5629

CNG Fuel Injector 7 Control

C006


Object Number: 831369 Size: CH

Object Number: 831372 Size: CH

Connector Part Information
    • 15326854
    • 12-Way M GT 150 Sealed 4.0 (BK)

Connector Part Information
    • 15326849
    • 12-Way F GT 150 Sealed 4.0 (BK)

Pin

Wire Color

Circuit No.

Function

Pin

Wire Color

Circuit No.

Function

A

L-GN/BK

1745

Gasoline Fuel Injector 2 Control

A

L-GN/BK

1745

Gasoline Fuel Injector 2 Control

B

L-BU/BK

844

Gasoline Fuel Injector 4 Control

B

L-BU/BK

844

Gasoline Fuel Injector 4 Control

C

YE/BK

846

Gasoline Fuel Injector 6 Control

C

YE/BK

846

Gasoline Fuel Injector 6 Control

D

D-BU/WH

878

Gasoline Fuel Injector 8 Control

D

D-BU/WH

878

Gasoline Fuel Injector 8 Control

E

PK

239

Ignition Voltage

E

PK

239

Ignition Voltage

F

PK

239

Ignition Voltage

F

PK

239

Ignition Voltage

G

PK

239

Ignition Voltage

G

PK

239

Ignition Voltage

H

PK

239

Ignition Voltage

H

PK

239

Ignition Voltage

J

YE

5624

CNG Fuel Injector 2 Control

J

YE

5624

CNG Fuel Injector 2 Control

K

BR

5626

CNG Fuel Injector 4 Control

K

BR

5626

CNG Fuel Injector 4 Control

L

L-BU

5628

CNG Fuel Injector 6 Control

L

L-BU

5628

CNG Fuel Injector 6 Control

M

D-GN

5630

CNG Fuel Injector 8 Control

M

D-GN

5630

CNG Fuel Injector 8 Control

Fuel Rail Pressure Sensor


Object Number: 258299 Size: CH

Connector Part Information
    • 12065287
    • 3-Way F Metri-Pack Sealed 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

TN

476

Low Reference

B

GY

474

5-Volt Reference

C

D-BU

5622

Sensor Signal

AF Fuel Injector #1


Object Number: 684833 Size: CH

Connector Part Information
    • 12129140
    • 2-Way F Metri Pack 280.1 Pull to Seat (BK)

Pin

Wire Color

Circuit No.

Function

A

PN

139

Injector Power

B

OR

5623

Injector Control

AF Fuel Injector #2


Object Number: 684833 Size: CH

Connector Part Information
    • 12129140
    • 2-Way F Metri Pack 280.1 Pull to Seat (BK)

Pin

Wire Color

Circuit No.

Function

A

PN

239

Injector Power

B

YE

5624

Injector Control

AF Fuel Injector #3


Object Number: 684833 Size: CH

Connector Part Information
    • 12129140
    • 2-Way F Metri Pack 280.1 Pull to Seat (BK)

Pin

Wire Color

Circuit No.

Function

A

PN

139

Injector Power

B

PU

5625

Injector Control

AF Fuel Injector #4


Object Number: 684833 Size: CH

Connector Part Information
    • 12129140
    • 2-Way F Metri Pack 280.1 Pull to Seat (BK)

Pin

Wire Color

Circuit No.

Function

A

PN

239

Injector Power

B

BN

5626

Injector Control

AF Fuel Injector #5


Object Number: 684833 Size: CH

Connector Part Information
    • 12129140
    • 2-Way F Metri Pack 280.1 Pull to Seat (BK)

Pin

Wire Color

Circuit No.

Function

A

PN

139

Injector Power

B

L-GN

5627

Injector Control

AF Fuel Injector #6


Object Number: 684833 Size: CH

Connector Part Information
    • 12129140
    • 2-Way F Metri Pack 280.1 Pull to Seat (BK)

Pin

Wire Color

Circuit No.

Function

A

PN

239

Injector Power

B

L-BU

5628

Injector Control

AF Fuel Injector #7


Object Number: 684833 Size: CH

Connector Part Information
    • 12129140
    • 2-Way F Metri Pack 280.1 Pull to Seat (BK)

Pin

Wire Color

Circuit No.

Function

A

PN

139

Injector Power

B

D-BU

5629

Injector Control

AF Fuel Injector #8


Object Number: 684833 Size: CH

Connector Part Information
    • 12129140
    • 2-Way F Metri Pack 280.1 Pull to Seat (BK)

Pin

Wire Color

Circuit No.

Function

A

PN

239

Injector Power

B

D-GN

5630

Injector Control

Low Pressure Lock-Off Relay


Object Number: 535912 Size: CH

Connector Part Information
    • 12129716
    • 4-Way F Sealed Flexlock 280 Series (M-GY)

Pin

Wire Color

Circuit No.

Function

30

PK

639

Ignition Voltage

85

PK

639

Ignition Voltage

86

D-BU

5617

Relay Control

87

OR

5619

LPL Power

Low Pressure Lock-Off Solenoid


Object Number: 236598 Size: CH

Connector Part Information
    • 12052641
    • 2-Way F Metri-Pack Sealed 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

BK

1250

Ground

B

OR

5619

Solenoid Voltage

High Pressure Lock-Off Solenoid


Object Number: 236598 Size: CH

Connector Part Information
    • 12052641
    • 2-Way F Metri-Pack Sealed 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

OR/BK

5620

Solenoid Voltage

B

BK

12500

Ground

Fuel Tank Temperature Sensor


Object Number: 236598 Size: CH

Connector Part Information
    • 12052644
    • 2-Way F Metri-Pack Sealed 150 Series (L-GY)

Pin

Wire Color

Circuit No.

Function

A

TN

5631

Low Reference

B

D-BU

5632

Sensor Signal

AF Fuel Tank Pressure Sensor


Object Number: 258299 Size: CH

Connector Part Information
    • 12065287
    • 3-Way F Metri-Pack Sealed 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

TN

5631

Low Reference

B

GY

5634

5-Volt Reference

C

D-GN/WH

5633

Sensor Signal

Fuel Gage Select Switch


Object Number: 646374 Size: CH

Connector Part Information
    • 15332145
    • 8-Way F GT 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

PU

5607

Fuel Gage Select Switch Signal

B

--

--

Not used

C

L-GN

5606

Fuel Indicator Lamp Control

D-H

--

--

Not Used