GM Service Manual Online
For 1990-2009 cars only
Connector 1: Heated Steering Wheel Control Module C1 - Heated Steering Wheel (NR7/N31)
Connector 2: Heated Steering Wheel Control Module C2 - Heated Steering Wheel Switch (NR7/N31)
Connector 3: Heated Steering Wheel Control Module C3 (NR7/N31)
Connector 4: Steering Column Lock Control Module C1 (UA2)
Connector 5: Steering Column Lock Control Module C2 (UA2)
Connector 6: Steering Wheel Controls - Left (Steering Wheel Control Switch Assembly)
Connector 7: Steering Wheel Controls - Right (Steering Wheel Control Switch Assembly)
Connector 8: Telescoping Actuator C1
Connector 9: Telescoping Wheel Position Sensor C2 (A45)
Connector 10: Tilt Actuator C1
Connector 11: Tilt Wheel Position Sensor C2 (A45)
Connector 12: Tilt/Telescope Switch (4-Spoke)
Connector 13: Tilt/Telescope Switch (3-Spoke)

Heated Steering Wheel Control Module C1 - Heated Steering Wheel (NR7/N31)


Object Number: 39665  Size: CH

Connector Part Information

  • OEM: 12089248
  • Service: Service by Harness - See Part Catalog
  • Description: 4-Way F Metri-Pack 150 Series (BK)

Terminal Part Information

  • Terminal/Tray: 12064971/5
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12094429/J-35616-2A (GY)

Heated Steering Wheel Control Module C1 - Heated Steering Wheel (NR7/N31)

Pin

Wire Color

Circuit No.

Function

A

YE

--

Steering Wheel Heating Element Supply Voltage

B

YE

--

Heated Steering Wheel Temperature Sensor Signal

C

RD/BK

350

Ground

D

RD/BK

350

Ground

Heated Steering Wheel Control Module C2 - Heated Steering Wheel Switch (NR7/N31)


Object Number: 812599  Size: CH

Connector Part Information

  • OEM: 50-57-9403
  • Service: Service by Harness - See Part Catalog
  • Description: 3-Way F Molex (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Heated Steering Wheel Control Module C2 - Heated Steering Wheel Switch (NR7/N31)

Pin

Wire Color

Circuit No.

Function

1

BK

350

Ground

2

RD/BK

--

Indicator Control

3

GN

--

Heated Steering Wheel Switch Supply Voltage

Heated Steering Wheel Control Module C3 (NR7/N31)


Object Number: 82383  Size: CH

Connector Part Information

  • OEM: 12047662
  • Service: Service by Harness - See Part Catalog
  • Description: 2-Way F Metri-Pack 150 Series (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Heated Steering Wheel Control Module C3 (NR7/N31)

Pin

Wire Color

Circuit No.

Function

A

OG

341

Ignition 3 Voltage

B

BK

350

Ground

Steering Column Lock Control Module C1 (UA2)


Object Number: 1391782  Size: CH

Connector Part Information

  • OEM: 173850-1
  • Service: Service by Harness - See Part Catalog
  • Description: 8-Way F 070 AMP (WH)

Terminal Part Information

  • Pins: 1, 2, 3, 4, 5, 6, 7
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Steering Column Lock Control Module C1 (UA2)

Pin

Wire Color

Circuit No.

Function

1

D-GN/WH

9154

Transmission Shift Select Switch Park Signal

2

RD/WH

9840

Battery Positive Voltage

3

WH

9122

Steering Column Lock Module Lock Enable Relay Control

4

BK/WH

351

Ground

5

PK

339

Ignition 1 Voltage

6

BK

350

Ground

7

D-GN

5060

Low Speed GMLAN Serial Data

8

--

--

Not Used

Steering Column Lock Control Module C2 (UA2)


Object Number: 130637  Size: CH

Connector Part Information

  • OEM: 12064760
  • Service: Service by Harness - See Part Catalog
  • Description: 4-Way F Metri-Pack 150 Series (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Steering Column Lock Control Module C2 (UA2)

Pin

Wire Color

Circuit No.

Function

A

L-GN

1601

Steering Column Lock Signal

B

BK

1602

Ground

C

PU

1604

Steering Column Unlock

D

OG

1603

Steering Column Lock

Steering Wheel Controls - Left (Steering Wheel Control Switch Assembly)


Object Number: 1333392  Size: CH

Connector Part Information

  • OEM: 50-57-9407
  • Service: Service by Harness - See Part Catalog
  • Description: 7-Way F (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Steering Wheel Controls - Left (Steering Wheel Control Switch Assembly)

Pin

Wire Color

Circuit No.

Function

1

RD

1375

Remote Radio Control Head Accessory Supply Voltage

2

BK

350

Ground

3

YE

1491

Backlight Lamps Control

4

D-BU

1796

Steering Wheel Controls Signal

5

L-BU

1011

Remote Radio Signal

6

PK

--

Heated Steering Wheel Switch Supply Voltage

7

OG

--

Heated Steering Wheel Switch Indicator Control

Steering Wheel Controls - Right (Steering Wheel Control Switch Assembly)


Object Number: 605511  Size: CH

Connector Part Information

  • OEM: 50-57-9405
  • Service: Service by Harness - See Part Catalog
  • Description: 5-Way F (BK)

Terminal Part Information

  • Pins: 1, 2, 3, 4
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Steering Wheel Controls - Right (Steering Wheel Control Switch Assembly)

Pin

Wire Color

Circuit No.

Function

1

L-BU

1011

Remote Radio Signal

2

BK

350

Ground

3

YE

1491

Backlight Lamps Control

4

D-BU

1796

Steering Wheel Controls Signal

5

--

--

Not Used

Telescoping Actuator C1


Object Number: 130707  Size: CH

Connector Part Information

  • OEM: 12020556
  • Service: Service by Harness - See Part Catalog
  • Description: 2-Way F Metri-Pack 480 Series (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Telescoping Actuator C1

Pin

Wire Color

Circuit No.

Function

A

TN

287

Steering Column Telescope Motor Control - Reverse

B

OG

2098

Steering Column Telescope Motor Control - Forward

Telescoping Wheel Position Sensor C2 (A45)


Object Number: 333035  Size: CH

Connector Part Information

  • OEM: 12047781
  • Service: Service by Harness - See Part Catalog
  • Description: 3-Way F Metri-Pack 150 Series (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Telescoping Wheel Position Sensor C2 (A45)

Pin

Wire Color

Circuit No.

Function

A

TN

782

Memory Seat/Mirror Sensor Low Reference

B

GY

788

Memory Mirror Position Sensor 5-Volt Reference

C

OG

2153

Steering Column Telescope Motor Signal

Tilt Actuator C1


Object Number: 130706  Size: CH

Connector Part Information

  • OEM: 12052110
  • Service: Service by Harness - See Part Catalog
  • Description: 2-Way F Metri-Pack 480 Series (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Tilt Actuator C1

Pin

Wire Color

Circuit No.

Function

A

RD

2111

Steering Column Tilt Motor Up Control

B

BN

2112

Steering Column Tilt Motor Down Control

Tilt Wheel Position Sensor C2 (A45)


Object Number: 333035  Size: CH

Connector Part Information

  • OEM: 12065422
  • Service: Service by Harness - See Part Catalog
  • Description: 3-Way F Metri-Pack 150 Series (BK)

Terminal Part Information

  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Tilt Wheel Position Sensor C2 (A45)

Pin

Wire Color

Circuit No.

Function

A

TN

782

Memory Seat/Mirror Sensor Low Reference

B

GY

788

Memory Mirror Position Sensor 5-Volt Reference

C

OG

2154

Steering Column Tilt Motor Signal

Tilt/Telescope Switch (4-Spoke)


Object Number: 40425  Size: CH

Connector Part Information

  • OEM: 12064763
  • Service: Service by Harness - See Part Catalog
  • Description: 6-Way M Metri-Pack 150 Series (GY)

Terminal Part Information

  • Pins: A, B, C, D, F
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Tilt/Telescope Switch (4-Spoke)

Pin

Wire Color

Circuit No.

Function

A

GY

2096

Steering Column Tilt and Telescope Up Switch Signal

B

YE

2097

Steering Column Tilt and Telescope Down Switch Signal

C

OG

2095

Steering Column Tilt and Telescope Rearward Switch Signal

D

PU

2094

Steering Column Tilt and Telescope Forward Switch Signal

E

--

--

Not Used

F

RD

1640

Battery Positive Voltage

Tilt/Telescope Switch (3-Spoke)


Object Number: 1654915  Size: CH

Connector Part Information

  • OEM: 12185636
  • Service: Service by Harness - See Part Catalog
  • Description: 5-Way M Metri-Pack 150 Series (BK)

Terminal Part Information

  • Pins: 1, 2, 3, 4, 5
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Tilt/Telescope Switch (3-Spoke)

Pin

Wire Color

Circuit No.

Function

1

YE

2097

Steering Column Tilt and Telescope Down Switch Signal

2

OG

2095

Steering Column Tilt and Telescope Rearward Switch Signal

3

PU

2094

Steering Column Tilt and Telescope Forward Switch Signal

4

RD

1640

Battery Positive Voltage

5

GY

2096

Steering Column Tilt and Telescope Up Switch Signal