GM Service Manual Online
For 1990-2009 cars only
Connector 1: Front Axle Actuator
Connector 2: Transfer Case Encoder Motor
Connector 3: Transfer Case Shift Control Module - C1
Connector 4: Transfer Case Shift Control Module - C2
Connector 5: Transfer Case Shift Control Module - C3
Connector 6: Transfer Case Shift Control Switch - C1
Connector 7: Transfer Case Shift Control Switch - C2

Front Axle Actuator


Object Number: 655795  Size: CH

Connector Part Information

  • OEM: 15324541
  • Service: 12117277
  • Description: 4-Way F Metri-Pack 150 Series Sealed (BU)

Terminal Part Information

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

Front Axle Actuator

Pin

Wire Color

Circuit No.

Function

A

BK/WH

1695

Axle Switch Signal

B

L-BU

1296

Axle Actuator - Control

C

BN

241

Ignition 3 Voltage

D

--

--

Unavailable

E

BK

2150

Ground

Transfer Case Encoder Motor


Object Number: 646412  Size: CH

Connector Part Information

  • OEM: 15326642
  • Service: 15306395
  • Description: 5-Way F GT 280 Series Sealed (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

Transfer Case Encoder Motor

Pin

Wire Color

Circuit No.

Function

A

L-GN/BK

431

5-Volt Reference

B

BN/WH

1555

Encoder Signal

C

BK/WH

1554

Low Reference

D

BK

1552

Motor Control A

E

RD

1553

Motor Control B

Transfer Case Shift Control Module - C1


Object Number: 744295  Size: CH

Connector Part Information

  • OEM: 12084944
  • Service: 12084944
  • Description: 16-Way F Micro-Pack 100 Series (BK)

Terminal Part Information

  • Terminal/Tray: 12146447/3
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12031876-1/J-35616-6 (BN)

Transfer Case Shift Control Module - C1

Pin

Wire Color

Circuit No.

Function

A1

D-GN/WH

1133

Class 2 Serial Data

A2

L-BU

1296

4WD Relay Coil Supply Voltage

A3

--

--

Not Used

A4

PU/WH

1565

4 LO Indicator - Control

A5

TN/BK

1566

4 HI Indicator - Control

A6

L-BU

1693

Switch Signal

A7

BK/WH

1554

Low Reference

A8

BK/WH

1851

Ground

B1-B2

--

--

Not Used

B3

L-GN/BK

1563

2 HI Indicator - Control

B4

BN

1560

Neutral Indicator Control

B5

GY/BK

1694

4WD Low Signal

B6

BN/WH

1555

Encoder Signal

B7-B8

--

--

Not Used

Transfer Case Shift Control Module - C2


Object Number: 73152  Size: CH

Connector Part Information

  • OEM: 12084945
  • Service: 12084945
  • Description: 16-Way F Metri-Pack 100 Series (GY)

Terminal Part Information

  • Terminal/Tray: 12146447/3
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12031876-1/J-35616-6 (BN)

Transfer Case Shift Control Module - C2

Pin

Wire Color

Circuit No.

Function

A1-A7

--

--

Not Used

A8

L-GN/BK

431

5-Volt Reference

B1-B5

--

--

Not Used

B6

BK/WH

1695

4WD Engaged Signal

B7

--

--

Not Used

B8

GY

596

5-Volt Reference

Transfer Case Shift Control Module - C3


Object Number: 62450  Size: CH

Connector Part Information

  • OEM: 12052856
  • Service: 12125636
  • Description: 4-Way F Metri-Pack 280 Series (BK)

Terminal Part Information

  • Terminal/Tray: 12015858/4
  • Core/Insulation Crimp: F/G
  • Release Tool/Test Probe: 12094430/J-35616-4A (PU)

Transfer Case Shift Control Module - C3

Pin

Wire Color

Circuit No.

Function

A

BK

2150

Ground

B

OG

1640

Battery Positive Voltage

C

BK

1552

Motor Control A

D

RD

1553

Motor Control B

Transfer Case Shift Control Switch - C1


Object Number: 524811  Size: CH

Connector Part Information

  • OEM: 12186758
  • Service: 15306328
  • Description: 8-Way F Metri-Pack 150 Series (GY)

Terminal Part Information

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

Transfer Case Shift Control Switch - C1

Pin

Wire Color

Circuit No.

Function

A

BK

1050

Ground

B

--

--

Not Used

C

BN

1560

Neutral Indicator Control

D

--

--

Not Used

E

PU/WH

1382

LED Dimming Supply

F

BN/WH

230

Instrument Panel Lamps Dimming Control

G

BN

241

Ignition 3 Voltage

H

GY

596

5-Volt Reference

Transfer Case Shift Control Switch - C2


Object Number: 73231  Size: CH

Connector Part Information

  • OEM: 12064860
  • Service: 15306052
  • Description: 6-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)

Transfer Case Shift Control Switch - C2

Pin

Wire Color

Circuit No.

Function

A-B

--

--

Not Used

C

TN/BK

1566

4 HI Indicator - Control

D

PU/WH

1565

4 LO Indicator - Control

E

L-GN/BK

1563

2 HI Indicator - Control

F

L-BU

1693

Switch Signal