GM Service Manual Online
For 1990-2009 cars only
Table 1: Rear Wheel Steering Mode Select Switch
Table 2: Rear Wheel Steering Control Module - C1
Table 3: Rear Wheel Steering Control Module - C2
Table 4: Rear Wheel Steering Control Module - C3
Table 5: Rear Wheel Steering Module - C4
Table 6: Rear Wheel Position Sensor
Table 7: Steering Wheel Speed/Position Sensor

Rear Wheel Steering Mode Select Switch


Object Number: 62435  Size: CH

Connector Part Information

    • 12047531
    • 10-Way F Micro-Pack 100 Series (BK)

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

OG

2538

4-Wheel Steer Tow Mode Indicator Control

3

L-BU

2568

2-Wheel Steer Mode Indicator Control

4

TN

2569

4-Wheel Steer Mode Indicator Control

5

BN/WH

230

Instrument Panel Lamps Dimming Control

6

BK

1050

Ground

7

--

--

Not Used

8

PU/WH

1382

LED Dimming Supply

9

D-GN/WH

2891

Rear Wheel Steering Mode Select Switch Signal

10

D-BU

2544

5-Volt Reference

Rear Wheel Steering Control Module - C1


Object Number: 261930  Size: CH

Connector Part Information

    • 12191065
    • 16-Way F Micro-Pack 100 Series (BU)

Pin

Wire Color

Circuit No.

Function

1

YE

2556

Rear Wheel Steering Motor Actuator Hall A Signal

2

BN

2557

Rear Wheel Steering Motor Actuator Hall B Signal

3

BK

2559

Ground

4

D-BU

2564

Rear Wheel Position Sensor Position 2 Signal

5

RD

1444

12-Volt Reference

6

GY

2566

Rear Wheel Steering Motor Shorting Relay Ground

7-8

--

--

Not Used

9

L-BU

2558

Rear Wheel Steering Motor Actuator Hall C Signal

10

OG

2565

Rear Wheel Steering Motor Shorting Relay Voltage

11

TN

2560

Rear position Sensor Ground

12

D-GN

2563

Rear Wheel Position Sensor Position 1 Signal

13

WH

605

5-Volt Reference

14-16

--

--

Not Used

Rear Wheel Steering Control Module - C2


Object Number: 784743  Size: CH

Connector Part Information

    • 15355393
    • 3-Way F Mini-Fit Jr (BK)

Pin

Wire Color

Circuit No.

Function

A

RD

2545

Rear Wheel Steering Motor Actuator Phase A Control

B

D-BU

2546

Rear Wheel Steering Motor Actuator Phase B Control

C

OG

2547

Rear Wheel Steering Motor Actuator Phase C Control

Rear Wheel Steering Control Module - C3


Object Number: 814661  Size: CH

Connector Part Information

    • 15355404
    • 2-Way F Maxi 800 Series Sealed (BK)

Pin

Wire Color

Circuit No.

Function

A

BK

1750

Ground

B

RD

1042

Battery Positive Voltage

Rear Wheel Steering Module - C4


Object Number: 39784  Size: CH

Connector Part Information

    • 12129225
    • 24-Way F Micro-Pack 100 Series Sealed (GY)

Pin

Wire Color

Circuit No.

Function

1

L-GN

1763

Steering Wheel Position Sensor Phase A Signal

2

L-BU

1764

Steering Wheel Position Sensor Phase B Signal

3

--

--

Not Used

4

D-BU

2544

5-Volt Reference

5

--

--

Not Used

6

D-GN/WH

817

Vehicle Speed Signal

7

BN

541

Ignition 3 Voltage

8

--

--

Not Used

9

D-GN/WH

2891

Rear Wheel Steering Mode Select Switch Signal

10-12

--

--

Not Used

13

WH

1765

Steering Wheel Position Marker Pulse Signal

14-15

--

--

Not Used

16

L-BU

2568

2-Wheel Steer Mode Indicator Control

17

TN

2569

4-Wheel Steer Mode Indicator Control

18

--

--

Not Used

19

OG

2538

4-Wheel Steer Tow Mode Indicator Supply Voltage

20-22

--

--

Not Used

23

ORN

2640

Battery Positive Voltage

24

GY

2567

Class 2 Serial Data

Rear Wheel Position Sensor


Object Number: 646430  Size: CH

Connector Part Information

    • 15326815
    • 4-Way F GT 15 Series Sealed 4.0 (BK)

Pin

Wire Color

Circuit No.

Function

A

WH

605

5-Volt Reference

B

D-GN

2563

Rear Wheel Position Sensor Position 1 Signal

C

TN

2560

Rear Position Sensor Ground

D

D-BU

2564

Rear Wheel Position Sensor Position 2 Signal

Steering Wheel Speed/Position Sensor


Object Number: 280793  Size: CH

Connector Part Information

    • 12052444
    • 8-Way F Micro-Pack 100 Series (BK)

Pin

Wire Color

Circuit No.

Function

1

GY

1056

5-Volt Reference Voltage

2

BK

1835

Low Reference

3

L-GN

1763

Steering Wheel Position Sensor Phase A Signal

4

L-BU

1764

Steering Wheel Position Sensor Phase B Signal

5

WH

1765

Steering Wheel Position Marker Pulse Signal

6

L-BU

1059

Steering Wheel Position Sensor Signal

7

BN

41

Ignition 3 Voltage

8

BK

1851

Ground