GM Service Manual Online
For 1990-2009 cars only
Table 1: Electronic Brake Control Module (EBCM)
Table 2: Stop Lamp Switch C1
Table 3: Stop Lamp Switch C2
Table 4: Stop Lamp Switch C3
Table 5: Traction Control Switch
Table 6: Wheel Speed Sensor (WSS) - LF
Table 7: Wheel Speed Sensor (WSS) - LR
Table 8: Wheel Speed Sensor (WSS) - RF
Table 9: Wheel Speed Sensor (WSS) - RR

Electronic Brake Control Module (EBCM)


Object Number: 1548104  Size: CH

Connector Part Information

    • 9123-3042-30
    • 46-Way F (BK)

Pin

Wire Color

Circuit No.

Function

1

BK/OG

350

Ground

2

RD

542

Battery Positive Voltage

3

RD/YE

1440

Battery Positive Voltage

4

BK

150

Ground

5

BN

830

LF Wheel Speed Signal High

6

--

--

Not Used

7

PU

884

LR Wheel Speed Signal High

8

BU

883

RR Wheel Speed Signal Low

9

RD

873

RF Wheel Speed Signal Low

10

WH

872

RF Wheel Speed Signal High

11

BU/BK

799

ABS Serial Data

12-13

--

--

Not Used

14

TN

2501

LAN Signal

15-24

--

--

Not Used

25

TN

2501

LAN Signal

26

GY

873

LF Wheel Speed Signal Low

27

YE

885

LR Wheel Speed Signal Low

28

RD

839

Ignition Voltage

29

BK

882

RR Wheel Speed Signal High

30

BU/RD

20

Stop Lamp Switch Signal

31-24

--

--

Not Used

35

TN/BK

2500

LAN Signal

36-44

--

--

Not Used

45

TN/BK

2500

LAN Signal

46

--

--

Not Used

Stop Lamp Switch C1


Object Number: 1548106  Size: CH

Connector Part Information

    • 9123-4675-30
    • 2-Way F (BK)

Pin

Wire Color

Circuit No.

Function

A

OG/BU

640

Battery Positive Voltage

B

BU/RD

20

Stop Lamp switch Signal

Stop Lamp Switch C2


Object Number: 1548107  Size: CH

Connector Part Information

    • 2977373
    • 4-Way F (BK)

Pin

Wire Color

Circuit No.

Function

A

TN/WH

816

Traction Control Active Signal

B

PK

139

Ignition Voltage

C-D

--

--

Not Used

Stop Lamp Switch C3


Object Number: 1548108  Size: CH

Connector Part Information

    • 2977373
    • 4-Way F (BK)

Pin

Wire Color

Circuit No.

Function

A

PK

139

Ignition Voltage

B

BN

86

Cruise Control release Signal

C

GY

847

Extended Travel Brake Switch Signal

D

PK

439

Ignition Voltage

Traction Control Switch


Object Number: 1356233  Size: CH

Connector Part Information

    • 7283-1060
    • 6-Way F (BK)

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

BN/WH

32

Instrument Panel Lamp Fuse Supply Voltage

3

BK/GN

151

Ground

4

--

--

Not Used

5

RD/WH

1571

Traction Control Switch Signal

6

GY

230

Instrument Panel Lamps Dimming Control

Wheel Speed Sensor (WSS) - LF


Object Number: 1356098  Size: CH

Connector Part Information

    • 9421-2940
    • 2-Way M (WH)

Pin

Wire Color

Circuit No.

Function

A

BN

830

Left Front Wheel Speed Sensor Signal

B

GY

873

Left Front Wheel Speed Sensor Low Reference

Wheel Speed Sensor (WSS) - LR


Object Number: 1356098  Size: CH

Connector Part Information

    • 9421-5000
    • 2-Way M (WH)

Pin

Wire Color

Circuit No.

Function

A

PU

884

Left Rear Wheel Speed Sensor Signal

B

YE

885

Left Rear Wheel Speed Sensor Low Reference

Wheel Speed Sensor (WSS) - RF


Object Number: 1356098  Size: CH

Connector Part Information

    • 9421-0415
    • 2-Way M (WH)

Pin

Wire Color

Circuit No.

Function

A

WH

872

Right Front Wheel Speed Sensor Signal

B

RD

833

Right Front Wheel Speed Sensor Low Reference

Wheel Speed Sensor (WSS) - RR


Object Number: 1356098  Size: CH

Connector Part Information

    • 9421-4000
    • 2-Way M (WH)

Pin

Wire Color

Circuit No.

Function

A

BK

882

Right Rear Wheel Speed Sensor Signal

B

BU

883

Right Rear Wheel Speed Sensor Low Reference