GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2001 🢒 GMC C-Series Medium Duty Truck B7 🢒 Body and Accessories 🢒 Instrument Panel, Gauges, and Console 🢒 Instrument Panel, Gages, and Console Connector End Views
Table 1: Ammeter Connector
Table 2: Driver Information Center (DIC) (C1) Connector
Table 3: Driver Information Center (DIC) (C2) Connector
Table 4: Engine Coolant Temperature (ECT) Sensor Connector (LG5)
Table 5: Engine Hour Meter Connector
Table 6: Engine Oil Pressure (EOP) Sensor Connector (LG5)
Table 7: Fuel Level Sensor Connector (LG5) or Fuel Pump and Sender Assembly Connector (L18)
Table 8: Instrument Panel Cluster (IPC) Connector
Table 9: Multifunction Alarm Module Connector (L18)
Table 10: Multifunction Alarm Module Connector (LG5 w/o KPJ) or Multifunction Alarm Module (C1) Connector (LG5/KPJ)
Table 11: Multifunction Alarm Module (C2) Connector (LG5/KPJ)
Table 12: Speedometer Adapter Connector (LG5)
Table 13: Transmission Fluid Temperature (TFT) Gauge Connector
Table 14: Transmission Fluid Temperature (TFT) Sensor Connector

Ammeter Connector


Object Number: 62456 Size: CH

Connector Part Information
    • 12064752
    • 6-Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

GRY

8

Instrument Panel Lamp Supply Voltage - 1

B

BLK

150

Ground

C

WHT

2084

Ammeter Signal (+)

D

GRY

2083

Starter Feed Ammeter

E-F

--

--

Not Used

Driver Information Center (DIC) (C1) Connector


Object Number: 231421 Size: CH

Connector Part Information
    • 12052413
    • 11-Way F Micro-Pack 100 Series (BLU)

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

BLK

250

Ground

C

--

--

Not Used

D

YEL/BLK

1471

Brake Warning Indicator Supply Voltage 2 (JE3)

D

--

--

Not Used (JE5)

E

WHT/BLK

499

Reduced Engine Power Indicator Control (L18)

E

PNK

39

Ignition 1 Voltage (LG5/MX4/MTW)

F

TAN/WHT

33

Brake Warning Indicator Control (L18/JE5)

F

TAN/WHT

33

Brake Warning Indicator Control (LG5)

G

WHT/BLK

235

Bulb Test-Signal

H

LT BLU

1134

Park Brake Switch Signal

J

PNK

39

Ignition 1 Voltage

K

LT GRN/BLK

592

DRL Relay Control

L

--

--

Not Used

Driver Information Center (DIC) (C2) Connector


Object Number: 328558 Size: CH

Connector Part Information
    • 12084134
    • 11-Way F Micro-Pack 100 Series (BRN)

Pin

Wire Color

Circuit No.

Function

A

PNK

39

Ignition 1 Voltage

B

LT GRN

867

ABS Indicator Failure Control (JE3)

C

BRN/WHT

419

MIL Control

D

DK BLU

1938

Engine Overspeed Indicator Control (L18)

D

DK BLU

1938

Engine Overspeed Indicator Control (LG5/MX4/MTW)

E

RED

2013

High Idle Indicator Control

F

BRN/WHT

1034

Service Transmission Indicator Output (L18/MX4/MTW)

F

--

--

Not Used (LG5)

G

PNK

39

Ignition 1 Voltage (L18)

G

--

--

Not Used (LG5)

H

GRY

803

Change Engine Oil Indicator Control (L18)

H

LT BLU

1998

Intake Air Heater Indicator Control (LG5)

J

PNK

39

Ignition 1 Voltage (L18/MX4/MTW)

J

GRY

1234

Do Not Shift Indicator Control (LG5/MX4/MTW)

K

TAN/WHT

33

Brake Warning Indicator Control

L

YEL/BLK

68

Low Coolant Level Indicator Control

Engine Coolant Temperature (ECT) Sensor Connector (LG5)


Object Number: 68719 Size: CH

Connector Part Information
    • 12162198
    • 2-Way F Metri-Pack 150 Series, Sealed (GRY)

Pin

Wire Color

Circuit No.

Function

A

DK GRN

135

ECT Sensor Gauge Signal

B

BLK

150

Ground

Engine Hour Meter Connector


Object Number: 130635 Size: CH

Connector Part Information
    • 12045813
    • 4-Way F Metri-Pack 150 Series, (NAT)

Pin

Wire Color

Circuit No.

Function

A

YEL

53

Fuse Output-Generator-Tachometer Pulse-Type III Fuse

B

--

--

Not Used

C

BLK

150

Ground

D

--

--

Not Used

Engine Oil Pressure (EOP) Sensor Connector (LG5)


Object Number: 236406 Size: CH

Connector Part Information
    • 12065400
    • 2-Way F Metri-Pack 150 Series, Sealed (LT GRN)

Pin

Wire Color

Circuit No.

Function

A

TAN/WHT

331

Oil Pressure Sensor Signal

B

BLK

150

Ground

Fuel Level Sensor Connector (LG5) or Fuel Pump and Sender Assembly Connector (L18)


Object Number: 38608 Size: CH

Connector Part Information
    • 12162188 Connector Assembly
    • 4-Way F Metri-Pack 150.2 Series, Pull To Seat, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

150

Ground

B

--

Not Used, Plugged

C

GRY

120

Fuel Pump Supply Voltage

D

PPL

30

Fuel Level Sensor Signal

Instrument Panel Cluster (IPC) Connector


Object Number: 223224 Size: CH

Connector Part Information
    • 12040744
    • 32-Way F Micro-Pack 100 Series (BLK)

Pin

Wire Color

Circuit No.

Function

1-8

--

--

Not Used

9

PNK

39

Ignition 1 Voltage

10-14

--

--

Not Used

15

BLK

250

Ground

16

DK BLU

15

Right Turn Signal Lamps Supply Voltage

17

LT BLU

14

Left Turn Signal Lamps Supply Voltage

18

LT GRN

11

Headlamp High Beam Supply Voltage

19

BRN

25

Charge Indicator Control

20

BLK

250

Ground

21

TAN/WHT

331

Oil Pressure Sensor Signal (LG5)

21

BRN

445

Oil Pressure Gauge Signal (L18)

22

DK GRN

135

ECT Sensor Gauge Signal

23

--

--

Not Used

24

GRY

8

Instrument Panel Lamp Supply Voltage - 1

25

BLK

250

Ground

26

LT BLU

1377

Check Gauges Indicator Control

27

PNK

39

Ignition 1 Voltage

28

DK GRN

389

Vehicle Speed Signal (LG5)

28

DK GRN/WHT

817

Vehicle Speed Signal (L18)

29

BLK/WHT

451

Ground

30

PPL

30

Fuel Level Sensor Signal

31

--

--

Not Used

32

PNK

39

Ignition 1 Voltage

33

YEL

53

Fuse Output-Generator-Tachometer Pulse-Type III Fuse (LG5)

33

WHT

121

Engine Speed Signal (L18)

34

--

--

Not Used

Multifunction Alarm Module Connector (L18)


Object Number: 744296 Size: CH

Connector Part Information
    • 12110259
    • 16-Way F Micro-Pack 100 Series (GRN)

Pin

Wire Color

Circuit No.

Function

A1

--

--

Not Used

A2

LT BLU

1377

Check Gauges Indicator Control

A3

LT GRN

1478

Coolant Level Switch Signal

A4

LT BLU/BLK

1928

Brake Booster Fluid Flow Switch Signal (JE3)

A4

--

--

Not Used (JE5)

A5

GRY

847

Extended Travel Brake Switch Signal (JE3)

A5

--

--

Not Used (JE5)

A6

PNK

39

Ignition 1 Voltage

A7

LT BLU

20

Stop Lamp Supply Voltage (JE3)

A7

--

--

Not Used (JE5)

A8

ORN

1740

Battery Positive Voltage (JE3)

A8

--

--

Not Used (JE5)

B1

YEL/BLK

68

Low Coolant Level Indicator Control

B2

TAN/WHT

33

Brake Warning Indicator Control (JE3)

B2

--

--

Not Used (JE5)

B3

YEL/BLK

1471

Brake Warning Indicator Supply Voltage 2 (JE3)

B3

--

--

Not Used (JE5)

B4

BLK

150

Ground

B5

TAN/WHT

33

Brake Warning Indicator Control (JE5)

B5

--

--

Not Used (JE3)

B6

PPL

806

Crank Voltage

B7

YEL

53

Fuse Output-Generator-Tachometer Pulse-Type III Fuse

B8

DK BLU

527

Engine Shutdown Alarm Signal

Multifunction Alarm Module Connector (LG5 w/o KPJ) or Multifunction Alarm Module (C1) Connector (LG5/KPJ)


Object Number: 744295 Size: CH

Connector Part Information
    • 12084944
    • 16-Way F Micro-Pack 100 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A1

LT BLU/BLK

1928

Brake Booster Fluid Flow Switch Signal (JE3)

A1

--

--

Not Used (JE5)

A2

YEL

53

Fuse Output-Generator-Tachometer Pulse-Type III Fuse

A3

LT BLU

20

Stop Lamp Supply Voltage (JE3)

A3

--

--

Not Used (JE5)

A4

ORN/BLK

434

Neutral Safety Switch Signal

A5

PNK

39

Ignition 1 Voltage

A6

TAN/WHT

33

Brake Warning Indicator Control (JE3)

A6

--

--

Not Used (JE5)

A7

TAN/BLK

231

Oil Pressure Switch Signal

A8

BLK

150

Ground

B1

LT GRN

1478

Coolant Level Switch Signal

B2

YEL/BLK

68

Low Coolant Level Indicator Control

B3

YEL/BLK

1471

Brake Warning Indicator Supply Voltage 2 (JE3)

B4

GRY

847

Extended Travel Brake Switch Signal (JE3)

B4

--

--

Not Used (JE5)

B5

TAN/WHT

33

Brake Warning Indicator Control (JE5)

B5

--

--

Not Used (JE3)

B6

BRN

1675

Check Gauges Indicator Control

B7

LT BLU

1377

Check Gauges Indicator Control

B8

ORN

1740

Battery Positive Voltage (JE3)

B8

--

--

Not Used (JE5)

Multifunction Alarm Module (C2) Connector (LG5/KPJ)


Object Number: 130637 Size: CH

Connector Part Information
    • 12064760
    • 4-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

850

Ground

B

BLK

150

Ground

C

--

--

Not Used

D

GRY

535

Coolant Temperature Switch Signal

Speedometer Adapter Connector (LG5)


Object Number: 73152 Size: CH

Connector Part Information
    • 12084945
    • 16-Way F Micro-Pack 100 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A1

GRY/BLK

1467

Shift Motor Control (HPZ) or Air Shift Switch Signal (HR1/HR2)

A2-A8

--

--

Not Used

B1

PNK

39

Ignition 1 Voltage

B2

PPL/WHT

821

VSS High Signal

B3

LT GRN/BLK

822

VSS Low Signal

B4

--

--

Not Used

B5

BLK/WHT

451

Ground

B6

--

--

Not Used

B7

YEL

400

Signal High - Front

B8

DK GRN

389

Vehicle Speed Signal

Transmission Fluid Temperature (TFT) Gauge Connector


Object Number: 40422 Size: CH

Connector Part Information
    • 12064762
    • 6-Way Metri-Pack 150 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

BLK

341

Ignition 3 Voltage

B

--

--

Not Used

C

TAN/WHT

585

Transmission Oil Temperature Sensor Signal

D

BLK

250

Ground

E

--

--

Not Used

F

GRY

8

Instrument Panel Lamp Supply Voltage - 1

Transmission Fluid Temperature (TFT) Sensor Connector


Object Number: 646180 Size: CH

Connector Part Information
    • 12162198
    • 2-Way Metri-Pack 150.2 Series, Sealed, Pull To Seat (MD GRY)

Pin

Wire Color

Circuit No.

Function

A

TAN/WHT

585

Transmission Oil Temperature Sensor Signal

B

BLK

150

Ground