GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 TopKick C-Series (Conventional) C4/C5 🢒 Brakes 🢒 Air Antilock Brake System 🢒 Air Antilock Brake System Connector End Views
Table 1: Brake Pressure Modulator Valve - (LF)
Table 2: Brake Pressure Modulator Valve - (LR)
Table 3: Brake Pressure Modulator Valve - (RF)
Table 4: Brake Pressure Modulator Valve - (RR)
Table 5: Electronic Brake Control Module (EBCM) C1
Table 6: Electronic Brake Control Module (EBCM) C2
Table 7: Stop Lamp Switch
Table 8: Traction Control Switch
Table 9: Traction Control Valve
Table 10: Wheel Speed Sensors (WSS) - LF
Table 11: Wheel Speed Sensors (WSS) - LM
Table 12: Wheel Speed Sensor (WSS) - LR
Table 13: Wheel Speed Sensor (WSS) - RF
Table 14: Wheel Speed Sensor (WSS) - RM
Table 15: Wheel Speed Sensor (WSS) - RR

Brake Pressure Modulator Valve - (LF)


Object Number: 38598 Size: CH

Connector Part Information
    • 12040977
    • 3-Way F Metri-Pack 280 Series, Sealed (BK)

Pin

Wire Color

Circuit No.

Function

A

D-GN

1900

Left Front Modulator Exhaust Control

B

L-BU

1902

Right Front Modulator Supply Voltage

C

GY

1901

Left Front Modulator Hold Control

Brake Pressure Modulator Valve - (LR)


Object Number: 38598 Size: CH

Connector Part Information
    • 12040977
    • 3-Way F Metri-Pack 280 Series, Sealed (BK)

Pin

Wire Color

Circuit No.

Function

A

GY/BK

1913

Left Rear Modulator Exhaust Control

B

OG

1915

Left Rear Modulator Supply Voltage

C

L-BU/BK

1914

Left Rear Modulator Hold Control

Brake Pressure Modulator Valve - (RF)


Object Number: 38598 Size: CH

Connector Part Information
    • 12040977
    • 3-Way F Metri-Pack 280 Series, Sealed (BK)

Pin

Wire Color

Circuit No.

Function

A

PU

1906

Right Front Modulator Exhaust Control

B

TN

1908

Right Front Modulator Supply Voltage

C

YE

1907

Right Front Modulator Hold Control

Brake Pressure Modulator Valve - (RR)


Object Number: 38598 Size: CH

Connector Part Information
    • 12040977
    • 3-Way F Metri-Pack 280 Series, Sealed (BK)

Pin

Wire Color

Circuit No.

Function

A

L-GN/WH

1918

Right Rear Modulator Exhaust Control

B

PU

1920

Right Rear Modulator Supply Voltage

C

PK/BK

1919

Right Rear Modulator Hold Control

Electronic Brake Control Module (EBCM) C1


Object Number: 309412 Size: CH

Connector Part Information
    • 12034398
    • 30-Way F Metri-Pack 150 Series, Sealed (BK)

Pin

Wire Color

Circuit No.

Function

A1-A3

BK/WH

151

Ground

B1

PU

2661

Battery

B2-B3

--

--

Not Used

C1

TN

1908

Right Front Modulator Supply Voltage

C2

L-BU

832

Signal

C3

YE

2361

CAN Serial Data High

D1

YE

1907

Right Front Modulator Hold Control

D2

--

--

Not Used

D3

D-GN

2362

CAN Serial Data Low

E1

PU

1906

Right Front Modulator Exhaust Control

E2

WH

471

Trailer ABS Indicator Control - Late Production with RQ3/U86

E3

WH

1808

Service Traction Control Signal

F1

D-GN

1900

Left Front Modulator Exhaust Control

F2

BN/WH

1571

Traction Control Switch Signal

F3

--

--

Not Used

G1

GY

1901

Left Front Modulator Hold Control

G2

TN/BK

1921

SAE J1708 Serial Data A

G3

WH/BK

1922

SAE J1708 Serial Data B

H1

L-BU

1902

Right Front Modulator Supply Voltage

H2

WH

1909

Right Front Wheel Speed Sensor Signal

H3

BN/WH

1910

Right Front Wheel Speed Sensor Low Reference

J1

L-GN

1903

Left Front Wheel Speed Sensor Signal

J2

OG

1904

Left Front Wheel Speed Sensor Low Reference

J3

BK

150

Ground

K1

BK

2657

Exhaust Brake Relay Control

K2

PU

2661

Battery

K3

PU

2661

Battery

Electronic Brake Control Module (EBCM) C2


Object Number: 230155 Size: CH

Connector Part Information
    • 12040921
    • 18-Way F Metri-Pack 150 Series, Sealed (BK)

Pin

Wire Color

Circuit No.

Function

A1

PU

1920

Right Rear Modulator Supply Voltage

A2-A3

--

--

Not Used

B1

PK/BK

1919

Right Rear Modulator Hold Control

B2

BN

882

Right Rear Wheel Speed Sensor Signal

B3

WH

883

Right Rear Wheel Speed Sensor Low Reference

C1

L-GN/WH

1918

Right Rear Modulator Exhaust Control

C2

BK

884

Left Rear Wheel Speed Sensor Signal

C3

RD

885

Left Rear Wheel Speed Sensor Low Reference

D1

GY/BK

1913

Left Rear Modulator Exhaust Control

D2

PK

2668

Traction Control Value (Air) Hi

D3

PK/WH

2669

Traction Control Value (Air) Lo

E1

L-BU/BK

1914

Left Rear Modulator Hold Control

E2

L-GN/BK

1916

Right Rear Wheel Speed Sensor Signal

E3

L-BU/WH

1917

Right Rear Wheel Speed Sensor Low Reference

F1

OG

1915

Left Rear Modulator Supply Voltage

F2

D-BU/WH

1911

Left Rear Wheel Speed Sensor Signal

F3

D-GN/WH

1912

Left Rear Wheel Speed Sensor Low Reference

Stop Lamp Switch


Object Number: 62424 Size: CH

Connector Part Information
    • 12040551
    • 6-Way F Metri-Pack 480 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

BK/WH

451

Ground

B

BN

86

Cruise Control Release Signal

C

BN

441

Ignition 3 Voltage

D

PU

420

TCC Brake Switch/Cruise Control Release Signal

E

OG

140

Battery Positive Voltage

F

WH

17

Stop Lamp Switch Signal

Traction Control Switch


Object Number: 304344 Size: CH

Connector Part Information
    • 12177196
    • 6-Way F Metri-Pack 150 Series (BN)

Pin

Wire Color

Circuit No.

Function

A

BK

750

Ground

B

L-BU

832

Traction Control Active Signal

C

BN/WH

1571

Traction Control Switch Signal

D

BN

541

Ignition 3 Voltage

E

BN

2509

Left Rear Park Lamps Supply Voltage/Left Rear Park Lamps

F

WH

1808

Service Traction Control Signal

Traction Control Valve


Object Number: 666646 Size: CH

Connector Part Information
    • 15336024
    • 2-Way F GT 150 Sealed (BK)

Pin

Wire Color

Circuit No.

Function

1

PK

2668

Traction Control Modulator Control Hi

2

PK/WH

2669

Traction Control Modulator Control Lo

Wheel Speed Sensors (WSS) - LF


Object Number: 1416715 Size: CH

Connector Part Information
    • 12162852
    • 2-Way M Metri-Pack 150 Series, Sealed (BK)

Pin

Wire Color

Circuit No.

Function

A

L-GN

1903

Left Front Wheel Speed Sensor Signal

B

OG

1904

Left Front Wheel Speed Sensor Low Reference

Wheel Speed Sensors (WSS) - LM


Object Number: 1416715 Size: CH

Connector Part Information
    • 12162852
    • 2-Way M Metri-Pack 150 Series, Sealed (BK)

Pin

Wire Color

Circuit No.

Function

A

BK

884

Left Rear Wheel Speed Sensor Signal

B

RD

885

Left Rear Wheel Speed Sensor Low Reference

Wheel Speed Sensor (WSS) - LR


Object Number: 1416715 Size: CH

Connector Part Information
    • 12162852
    • 2-Way M Metri-Pack 150 Series, Sealed (BK)

Pin

Wire Color

Circuit No.

Function

A

D-BU/WH

1911

Left Rear Wheel Speed Sensor Signal

B

D-GN/WH

1912

Left Rear Wheel Speed Sensor Low Reference

Wheel Speed Sensor (WSS) - RF


Object Number: 1416715 Size: CH

Connector Part Information
    • 12162852
    • 2-Way M Metri-Pack 150 Series, Sealed (BK)

Pin

Wire Color

Circuit No.

Function

A

WH

1909

Right Front Wheel Speed Sensor Signal

B

BN/WH

1910

Right Front Wheel Speed Sensor Low Reference

Wheel Speed Sensor (WSS) - RM


Object Number: 1416715 Size: CH

Connector Part Information
    • 12162852
    • 2-Way M Metri-Pack 150 Series, Sealed (BK)

Pin

Wire Color

Circuit No.

Function

A

BN

882

Right Rear Wheel Speed Sensor Signal

B

WH

883

Right Rear Wheel Speed Sensor Low Reference

Wheel Speed Sensor (WSS) - RR


Object Number: 1416715 Size: CH

Connector Part Information
    • 12162852
    • 2-Way M Metri-Pack 150 Series, Sealed (BK)

Pin

Wire Color

Circuit No.

Function

A

L-GN/BK

1916

Right Rear Wheel Speed Sensor Signal

B

L-BU/WH

1917

Right Rear Wheel Speed Sensor Low Reference