GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 GMC C Sierra - 2WD 🢒 Engine 🢒 Engine Controls - 6.6L (LB7) 🢒 Engine Controls Connector End Views
Table 1: Accelerator Pedal Position (APP) Sensor
Table 2: Baro Sensor
Table 3: Camshaft Position (CMP) Sensor
Table 4: Coolant Level Switch
Table 5: Crankshaft Position (CKP) Sensor
Table 6: Engine Coolant Temperature (ECT) Sensor
Table 7: Fuel Injection Control Module (FICM) Connector - C1
Table 8: Fuel Injection Control Module (FICM) Connector - C2
Table 9: Fuel Injector 1, 3
Table 10: Fuel Injector 2, 4
Table 11: Fuel Injector 5, 7
Table 12: Fuel Injector 6, 8
Table 13: Fuel Pump
Table 14: Glow Plug/Intake Heater Relay Assembly
Table 15: Intake Air Temperature (IAT) / Mass Air Flow (MAF) Sensor
Table 16: Park/Neutral Position Switch - C1
Table 17: Park/Neutral Position Switch - C2

Accelerator Pedal Position (APP) Sensor


Object Number: 366097 Size: CH

Connector Part Information
    • 15318071
    • 10-Way F Metri-pack 150 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

GRY

1273

Low Reference

B

PPL

1272

Low Reference

C

LT BLU

1162

APP Sensor 2 Signal

D

TAN

1274

5 Volt Reference

E

BRN

971

Low Reference

F

DK BLU

1161

APP Sensor 1 Signal

G

WHT/BLK

1164

5 Volt Reference

H

--

--

Not Used

J

YEL/BLK

975

5 Volt Reference

K

DK GRN

1163

APP Sensor 3 Signal

Baro Sensor


Object Number: 684840 Size: CH

Connector Part Information
    • 12129946
    • 3-Way F M/P 150 Series Sealed (GRY)

Pin

Wire Color

Circuit No.

Function

A

ORN/BLK

1057

Low Reference

B

GRY/BLK

433

BARO Sensor Signal

C

WHT/BLK

2932

5 Volt Reference

Camshaft Position (CMP) Sensor


Object Number: 684840 Size: CH

Connector Part Information
    • 12129946
    • 3-Way F 150 Series Sealed (GRY)

Pin

Wire Color

Circuit No.

Function

A

RED

631

12 Volt Reference

B

PNK/BLK

632

Low Reference

C

BRN/WHT

633

CMP Sensor Signal

Coolant Level Switch


Object Number: 655783 Size: CH

Connector Part Information
    • 15324243
    • 2-Way F M/P 150 Series Sealed (GRY)

Pin

Wire Color

Circuit No.

Function

A

LT GRN

1478

Coolant Level Switch Signal

B

BLK

550

Ground

Crankshaft Position (CKP) Sensor


Object Number: 684840 Size: CH

Connector Part Information
    • 12129946
    • 3-Way F 150 Series Sealed (GRY)

Pin

Wire Color

Circuit No.

Function

A

LT GRN

1867

12 Volt Reference

B

YEL/BLK

1868

Low Reference

C

DK BLU/WHT

1869

CKP Sensor Signal

Engine Coolant Temperature (ECT) Sensor


Object Number: 646176 Size: CH

Connector Part Information
    • 12162195
    • 2-Way F SER 150.2 Series Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

GRY

720

Low Reference

B

YEL

410

ECT Sensor Signal

Fuel Injection Control Module (FICM) Connector - C1


Object Number: 743315 Size: CH

Connector Part Information
    • 1928403454
    • 81 Way F Bosch Series (BLK)

Pin

Wire Color

Circuit No.

Function

1

LT GRN/WHT

--

Fuel Injector 4 Command

2

BLK

--

Ground

3

ORN/BLK

--

Ignition Voltage

4

LT GRN/RED

--

Fuel Injector 1 Command

5

PNK

1239

Ignition 1 Voltage

6-43

--

--

Not Used

44

LT BLU/BLK

844

Fuel Injector 4 Control

45

BLU/WHT

845

Fuel Injector 5 Control

46

--

--

Not Used

47

PNK/BLK

1746

Fuel Injector 3 Control

48

RED/BLK

877

Fuel Injector 7 Control

49-58

--

--

Not Used

59

LT GRN/PPL

--

Fuel Injector 6 Command

60

LT GRN/PPL

--

Fuel Injector 6 Command

61

LT GRN/ORN

--

Fuel Injector 7 Command

62

LT GRN/ORN

--

Fuel Injector 7 Command

63

DK BLU/WHT

878

Fuel Injector 8 Control

64

YEL/BLK

846

Fuel Injector 6 Control

65

--

--

Not Used

66

BLK

1744

Fuel Injector 1 Control

67

LT GRN/BLK

1745

Fuel Injector 2 Control

68-81

--

--

Not Used

Fuel Injection Control Module (FICM) Connector - C2


Object Number: 743317 Size: CH

Connector Part Information
    • 1928403462
    • 40 Way F Bosch Series (BLK)

Pin

Wire Color

Circuit No.

Function

82-89

--

--

Not Used

90

DK GRN

2362

CAN Serial Data Low

91

YEL

2361

CAN Serial Data High

92-93

--

--

Not Used

94

LT BLU

2832

Engine Speed Signal

95-113

--

--

Not Used

114

--

Ground

115

LT GRN/BLK

--

Fuel Injector 3 Command

116

LT GRN/RED

--

Fuel Injector 5 Command

117

--

--

Not Used

118

ORN/WHT

--

Ignition Voltage

119

PNK

1239

Ignition Voltage

120

LT GRN/GRN

--

Fuel Injector 8 Command

121

LT GRN

--

Fuel Injector 2 Command

Fuel Injector 1, 3


Object Number: 684908 Size: CH

Connector Part Information
    • 15326632
    • 4-Way F GT 280 Series Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN/BLK

--

Ignition Voltage

B

LT GRN/BLK

--

Fuel Injector 1 Control

C

ORN/WHT

--

Ignition Voltage

D

LT GRN/BLK

--

Fuel Injector 3 Control

Fuel Injector 2, 4


Object Number: 684908 Size: CH

Connector Part Information
    • 15326632
    • 4-Way F GT 280 Series Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN/BLK

--

Ignition Voltage

B

LT GRN/WHT

--

Fuel Injector 4 Control

C

ORN/WHT

--

Ignition Voltage

D

LT GRN

--

Fuel Injector 2 Control

Fuel Injector 5, 7


Object Number: 684908 Size: CH

Connector Part Information
    • 15326632
    • 4-Way F GT 280 Series Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN/WHT

--

Ignition Voltage

B

LT GRN/RED

--

Fuel Injector 5 Control

C

ORN/BLK

--

Ignition Voltage

D

LT GRN/ORN

--

Fuel Injector 7 Control

Fuel Injector 6, 8


Object Number: 684908 Size: CH

Connector Part Information
    • 15326632
    • 4-Way F GT 280 Series Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN/WHT

--

Ignition Voltage

B

LT GRN/GRN

--

Fuel Injector 8 Control

C

ORN/BLK

--

Ignition Voltage

D

LT GRN/PPL

--

Fuel Injector 6 Control

Fuel Pump


Object Number: 365945 Size: CH

Connector Part Information
    • 12059450
    • 2-Way M Metri-pack 280 Series Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

GRY

120

Fuel Pump Supply Voltage

B

BLK

1650

Ground (20 Series)

BLK

2150

Ground (30 Series)

Glow Plug/Intake Heater Relay Assembly


Object Number: 2074408 Size: CH

Connector Part Information
    • FW-C-4F-B
    • 4-Way F (BLK)

Pin

Wire Color

Circuit No.

Function

A

YEL

505

Glow Plug Relay Control

B

PNK/YEL

--

Ground

C

PPL

985

IA Heater Relay Control

D

PNK

539

Ignition Voltage

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


Object Number: 655786 Size: CH

Connector Part Information
    • 15324447
    • 5-Way F 090II SLD (BLK)

Pin

Wire Color

Circuit No.

Function

1

BLK

552

Low Reference

2

TAN

472

IAT Sensor Signal

3

PNK

239

Ignition 1 Voltage

4

GRY/BLK

2931

Low Reference

5

YEL

492

MAF Sensor Signal

Park/Neutral Position Switch - C1


Object Number: 535904 Size: CH

Connector Part Information
    • 12191757
    • 4-Way F Metri-pack 150 (LT GRY)

Pin

Wire Color

Circuit No.

Function

A

BLK/WHT

771

Transmission Range Switch Signal A

B

GRY

773

Transmission Range Switch Signal C

C

WHT

776

Transmission Range Switch Signal P

D

YEL

772

Transmission Range Switch Signal B

Park/Neutral Position Switch - C2


Object Number: 535900 Size: CH

Connector Part Information
    • 12129840
    • 7-Way F Metri-pack 150 280 (MD GRY)

Pin

Wire Color

Circuit No.

Function

A

ORN/BLK

1786

Park/Neutral - Signal

B

LT GRN

275

Park Neutral Position Switch Park Signal

C

PNK

839

Ignition 1 Voltage

D

BLK/WHT

451

Ground

E

PPL/WHT

1035

Starter Relay Coil Supply Voltage

F

LT GRN

24

Backup Lamp Supply Voltage

G

YEL

1737

Neutral Safety Switch Park/Neutral Signal