GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 Chevy C Cab/Chassis HD (GMT 400) 🢒 Body 🢒 Wiring Systems 🢒 Engine Controls Connector End Views
Table 1: Accelerator Pedal Position (APP) Sensor
Table 2: Camshaft Position (CMP) Sensor
Table 3: Crankshaft Position (CKP) Sensor
Table 4: Engine Coolant Temperature (ECT) Sensor
Table 5: Evaporative Emission (EVAP) Canister Purge Valve
Table 6: Fuel Injector 1
Table 7: Fuel Injector 2
Table 8: Fuel Injector 3
Table 9: Fuel Injector 4
Table 10: Fuel Injector 5
Table 11: Fuel Injector 6
Table 12: Fuel Injector 7
Table 13: Fuel Injector 8
Table 14: Fuel Pump and Sender - Single Tank
Table 15: Fuel Balance Pump Module - C1 (Dual Tanks)
Table 16: Fuel Balance Pump Module - C2 - Dual Tanks
Table 17: Fuel Balance Pump Relay - Dual Tanks
Table 18: Fuel Balance Pump - Dual Tanks
Table 19: Fuel Pump and Sender - Primary - Dual Tanks
Table 20: Fuel Level Sender - Secondary - Dual Tanks
Table 21: Heated Oxygen Sensor (HO2S) - Bank 1
Table 22: Heated Oxygen Sensor (HO2S) - Bank 2
Table 23: Ignition Coil 1
Table 24: Ignition Coil 2
Table 25: Ignition Coil 3
Table 26: Ignition Coil 4
Table 27: Ignition Coil 5
Table 28: Ignition Coil 6
Table 29: Ignition Coil 7
Table 30: Ignition Coil 8
Table 31: Knock Sensor (KS) - Bank 1
Table 32: Knock Sensor (KS) - Bank 2
Table 33: MAF and IAT Sensor
Table 34: Manifold Absolute Pressure (MAP) Sensor
Table 35: PTO Relay
Table 36: PTO Switch
Table 37: Throttle Actuator Control (TAC) Module - C1
Table 38: Throttle Actuator Control (TAC) Module - C2
Table 39: Throttle Actuator Control Motor
Table 40: Throttle Position (TP) Sensor
Table 41: Vehicle Speed Sensor (VSS) - A/T
Table 42: Vehicle Speed Sensor (VSS) - M/T

Accelerator Pedal Position (APP) Sensor


Object Number: 570216 Size: CH

Connector Part Information
    • 12065425
    • 10 Way F Metri-pack 150 Series (BLK)

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

YEL/BLK

1275

5 Volt Reference

F

DK BLU

1161

APP Sensor 1 Signal

G

WHT/BLK

1164

5 Volt Reference

H

--

--

Not Used

J

BRN

1271

Low Reference

K

DK GRN

1163

APP Sensor 3 Signal

Camshaft Position (CMP) Sensor


Object Number: 516611 Size: CH

Connector Part Information
    • 12059595
    • 3 Way F Metri-pack 150 Series (BLK)

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

Crankshaft Position (CKP) Sensor


Object Number: 516611 Size: CH

Connector Part Information
    • 12059595
    • 3 Way F Metri-pack 150 Series (BLK)

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: 684807 Size: CH

Connector Part Information
    • 12110293
    • 3 Way F Metri-pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

GRY

720

Low Reference

B

YEL

410

ECT Sensor Signal

C

DK GRN

35

Coolant Temperature Indicator Control

Evaporative Emission (EVAP) Canister Purge Valve


Object Number: 684795 Size: CH

Connector Part Information
    • 12052643
    • 2 Way F Metri-pack 150 Series (RED)

Pin

Wire Color

Circuit No.

Function

A

PNK

539

Ignition 1 Voltage

B

DK GRN/

WHT

428

Canister Purge Solenoid Control

Fuel Injector 1


Object Number: 366123 Size: CH

Connector Part Information
    • 15326181
    • 2 Way F Lock Tab Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

PNK/WHT

439

Ignition 1 Voltage

B

BLK

1744

Fuel Injector 1 Control

Fuel Injector 2


Object Number: 366123 Size: CH

Connector Part Information
    • 15326181
    • 2 Way F Lock Tab Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

PNK

439

Ignition 1 Voltage

B

LT GRN/BLK

1745

Fuel Injector 2 Control

Fuel Injector 3


Object Number: 366123 Size: CH

Connector Part Information
    • 15326181
    • 2 Way F Lock Tab Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

PNK/WHT

439

Ignition 1 Voltage

B

PNK/BLK

1746

Fuel Injector 3 Control

Fuel Injector 4


Object Number: 366123 Size: CH

Connector Part Information
    • 15326181
    • 2 Way F Lock Tab Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

PNK

439

Ignition 1 Voltage

B

LT BLU/BLK

844

Fuel Injector 4 Control

Fuel Injector 5


Object Number: 366123 Size: CH

Connector Part Information
    • 15326181
    • 2 Way F Lock Tab Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

PNK/WHT

439

Ignition 1 Voltage

B

BLK/WHT

845

Fuel Injector 5 Control

Fuel Injector 6


Object Number: 366123 Size: CH

Connector Part Information
    • 15326181
    • 2 Way F Lock Tab Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

PNK

439

Ignition 1 Voltage

B

YEL/BLK

846

Fuel Injector 6 Control

Fuel Injector 7


Object Number: 366123 Size: CH

Connector Part Information
    • 15326181
    • 2 Way F Lock Tab Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

PNK/WHT

439

Ignition 1 Voltage

B

RED/BLK

877

Fuel Injector 7 Control

Fuel Injector 8


Object Number: 366123 Size: CH

Connector Part Information
    • 15326181
    • 2 Way F Lock Tab Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

PNK

439

Ignition 1 Voltage

B

DK BLU/WHT

878

Fuel Injector 8 Control

Fuel Pump and Sender - Single Tank


Object Number: 456551 Size: CH

Connector Part Information
    • 12160482
    • 4 Way F Metri-pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

WHT

1589

Fuel Level Sensor Signal

B

GRY

120

Fuel Pump Supply Voltage

C

BLK

150

Ground

D

BLK

470

Low Reference

Fuel Balance Pump Module - C1 (Dual Tanks)


Object Number: 743129 Size: CH

Connector Part Information
    • 12162826
    • 5 Way F Metri-pack 150.2 Series P2S (BLK)

Pin

Wire Color

Circuit No.

Function

A

PNK

639

Ignition 1 Voltage

B

LT BLU

975

Fuel Level Signal - Secondary

C

DK BLU/WHT

970

Fuel Level Signal - Primary

D

LT GRN

497

Fuel Pump Relay Control - Secondary

E

BLK/WHT

900

Low Reference

Fuel Balance Pump Module - C2 - Dual Tanks


Object Number: 655692 Size: CH

Connector Part Information
    • 12162193
    • 2 Way F Metri-pack 150.2 Series P2S (BLK)

Pin

Wire Color

Circuit No.

Function

A

GRY

474

5 Volt Reference

B

PPL/WHT

1589

Fuel Level Sensor Signal

Fuel Balance Pump Relay - Dual Tanks


Object Number: 535912 Size: CH

Connector Part Information
    • 12129716
    • 4 Way F Metri-pack 280 Series Flexlock (GRY)

Pin

Wire Color

Circuit No.

Function

30

PNK

639

Ignition 1 Voltage

85

GRY

120

Fuel Pump Supply Voltage

86

LT GRN

497

Fuel Balance Pump Relay Control Signal - Secondary

87

LT GRN

1058

Fuel Balance Pump Supply Voltage

Fuel Balance Pump - Dual Tanks


Object Number: 258174 Size: CH

Connector Part Information
    • 12010973
    • 2 Way M Weather Pack Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

150

Ground

B

LT GRN

1058

Fuel Balance Pump Supply Voltage

Fuel Pump and Sender - Primary - Dual Tanks


Object Number: 456551 Size: CH

Connector Part Information
    • 12160482
    • 4 Way F Metri-pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

DK BLU/WHT

970

Fuel Level Signal - Primary

B

GRY

120

Fuel Pump Supply Voltage

C

BLK

150

Ground

D

BLK/WHT

900

Low Reference

Fuel Level Sender - Secondary - Dual Tanks


Object Number: 38608 Size: CH

Connector Part Information
    • 12162188
    • 4 Way F Metri-pack 150.2 Series P2S (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK/WHT

900

Low Reference

B - C

--

--

Not Used

D

LT BLU

975

Fuel Level Signal - Secondary

Heated Oxygen Sensor (HO2S) - Bank 1


Object Number: 628099 Size: CH

Connector Part Information
    • 12092840
    • 5 Way M Metri-pack 150 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

BLK/WHT

451

Ground

B

PPL/WHT

1665

HO2S High Signal

C

--

--

Not Used

D

PNK

414

HO2S Heater High

E

DK GRN

676

HO2S Heater Low

Heated Oxygen Sensor (HO2S) - Bank 2


Object Number: 628099 Size: CH

Connector Part Information
    • 12092840
    • 5 Way M Metri-pack 150 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

BLK/WHT

451

Ground

B

PPL

1666

HO2S High Signal

C

--

--

Not Used

D

PNK

414

HO2S Heater High

E

DK GRN

676

HO2S Heater Low

Ignition Coil 1


Object Number: 684854 Size: CH

Connector Part Information
    • 12162144
    • 4 Way F Metri-pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

150

Ground

B

BRN

2129

Low Reference

C

PPL

2121

IC 1 Control

D

PNK

439

Ignition 1 Voltage

Ignition Coil 2


Object Number: 684854 Size: CH

Connector Part Information
    • 12162144
    • 4 Way F Metri-pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

150

Ground

B

BRN

2130

Low Reference

C

RED

2122

IC 2 Control

D

PNK

439

Ignition 1 Voltage

Ignition Coil 3


Object Number: 684854 Size: CH

Connector Part Information
    • 12162144
    • 4 Way F Metri-pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

150

Ground

B

BRN

2129

Low Reference

C

LT BLU

2123

IC 3 Control

D

PNK

439

Ignition 1 Voltage

Ignition Coil 4


Object Number: 684854 Size: CH

Connector Part Information
    • 12162144
    • 4 Way F Metri-pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

150

Ground

B

BRN

2130

Low Reference

C

DK GRN

2124

IC 4 Control

D

PNK

439

Ignition 1 Voltage

Ignition Coil 5


Object Number: 684854 Size: CH

Connector Part Information
    • 12162144
    • 4 Way F Metri-pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

150

Ground

B

BRN

2129

Low Reference

C

DK GRN

2125

IC 5 Control

D

PNK

439

Ignition 1 Voltage

Ignition Coil 6


Object Number: 684854 Size: CH

Connector Part Information
    • 12162144
    • 4 Way F Metri-pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

150

Ground

B

BRN

2130

Low Reference

C

LT BLU

2126

IC 6 Control

D

PNK

439

Ignition 1 Voltage

Ignition Coil 7


Object Number: 684854 Size: CH

Connector Part Information
    • 12162144
    • 4 Way F Metri-pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

150

Ground

B

BRN

2129

Low Reference

C

RED

2127

IC 7 Control

D

PNK

439

Ignition 1 Voltage

Ignition Coil 8


Object Number: 684854 Size: CH

Connector Part Information
    • 12162144
    • 4 Way F Metri-pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

150

Ground

B

BRN

2130

Low Reference

C

PPL

2128

IC 8 Control

D

PNK

439

Ignition 1 Voltage

Knock Sensor (KS) - Bank 1


Object Number: 95764 Size: CH

Connector Part Information
    • 12176800
    • 1 Way F Metri-pack 150 Series (GRY)

Pin

Wire Color

Circuit No.

Function

1

DK BLU

496

KS 1 Signal

Knock Sensor (KS) - Bank 2


Object Number: 95764 Size: CH

Connector Part Information
    • 12176800
    • 1 Way F Metri-pack 150 Series (GRY)

Pin

Wire Color

Circuit No.

Function

1

LT BLU

1876

KS 2 Signal

MAF and IAT Sensor


Object Number: 366067 Size: CH

Connector Part Information
    • 15305555
    • 5 Way F GT 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

552

Low Reference

B

TAN

472

IAT Sensor Signal

C

BLK/WHT

451

Ground

D

PNK

539

Ignition 1 Voltage

E

YEL

492

MAF Sensor Signal

Manifold Absolute Pressure (MAP) Sensor


Object Number: 684840 Size: CH

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

Pin

Wire Color

Circuit No.

Function

A

ORN/BLK

469

Low Reference

B

LT GRN

432

MAP Sensor Signal

C

GRY

597

5 Volt Reference

PTO Relay


Object Number: 535912 Size: CH

Connector Part Information
    • 12129716
    • 4 Way F Metri-pack 280 Series Flexlock (MD GRY)

Pin

Wire Color

Circuit No.

Function

30

ORN

1040

Battery Positive Voltage

85

LT GRN

488

PTO Enable Signal

86

PPL

2562

PTO Relay Control

87

WHT

2561

PTO Control

PTO Switch


Object Number: 280767 Size: CH

Connector Part Information
    • 12186098
    • 8 Way F Metri-pack 150 Series LT GRY

Pin

Wire Color

Circuit No.

Function

A

ORN

41

Ignition 3 Voltage

B

LT GRN

488

PTO Enable Signal

C

GRY

8

Instrument Panel Lamp Supply Voltage 1

D

GRY

397

Cruise Control On Switch Signal

E

YEL

938

PTO Status Signal

F

BLK

150

Ground

G

DK BLU

84

Cruise Control Set/Coast Switch signal

H

PPL/WHT

1382

LED Dimming Signal

Throttle Actuator Control (TAC) Module - C1


Object Number: 261930 Size: CH

Connector Part Information
    • 12191065
    • 16 Way F Micro-pack 100 W Series (BLK)

Pin

Wire Color

Circuit No.

Function

1

DK GRN

485

TP Sensor 1 Signal

2

GRY

416

5 Volt Reference

3

BLK

452

Low Reference

4

DK BLU

84

Cruise Control Set/Coast Switch Signal

5

GRY/BLK

87

Cruise Control Resume/Accel Switch Signal

6

WHT

17

Stop Lamp Switch Signal

7

PNK

639

Ignition 1 Voltage

8

BRN

582

TAC Motor Control - 2

9

LT BLU/BLK

1688

5 Volt Reference

10

BLK/WHT

1704

Low Reference

11

PPL

486

TP Sensor 2 Signal

12

ORN/BLK

1061

UART Serial Data - Secondary

13

DK BLU/

WHT

774

UART Serial Data - Tertiary

14

GRY

397

Cruise Control On Switch Signal

15

BLK/WHT

451

Ground

16

YEL

581

TAC Motor Control - 1

Throttle Actuator Control (TAC) Module - C2


Object Number: 570216 Size: CH

Connector Part Information
    • 12065425
    • 10 Way F Metri-pack 150 Series (BLK)

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

YEL/BLK

1275

5 Volt Reference

F

DK BLU

1161

APP Sensor 1 Signal

G

WHT/BLK

1164

5 Volt Reference

H

--

--

Not Used

J

BRN

1271

Low Reference

K

DK GRN

1163

APP Sensor 3 Signal

Throttle Actuator Control Motor


Object Number: 684799 Size: CH

Connector Part Information
    • 12077900
    • 2 Way F Metri-pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BRN

582

TAC Control - 2

B

YEL

581

TAC Control - 1

Throttle Position (TP) Sensor


Object Number: 697032 Size: CH

Connector Part Information
    • 12162260
    • 6 Way F Metri-pack 150.2 Series P2S (BLK)

Pin

Wire Color

Circuit No.

Function

A

GRY

416

5 Volt Reference

B

BLK

452

Low Reference

C

DK GRN

485

TP Sensor 1 Signal

D

LT BLU/BLK

1688

5 Volt Reference

E

BLK/WHT

1704

Low Reference

F

PPL

486

TP Sensor 2 Signal

Vehicle Speed Sensor (VSS) - A/T


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

PPL/WHT

821

VSS High Signal

B

LT GRN/BLK

822

VSS Low Signal

Vehicle Speed Sensor (VSS) - M/T


Object Number: 38554 Size: CH

Connector Part Information
    • 12124819
    • 2 Way F Metri-pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

PPL/WHT

821

VSS High Signal

B

LT GRN/BLK

822

VSS Low Signal