GM Service Manual Online
For 1990-2009 cars only
Connector 1: Front Axle Actuator
Connector 2: Propshaft Speed Sensor - Front (NP8)
Connector 3: Propshaft Speed Sensor - Rear (NP8)
Connector 4: Transfer Case Encoder Motor (NP8)
Connector 5: Transfer Case Shift Control Module C1
Connector 6: Transfer Case Shift Control Module C2
Connector 7: Transfer Case Shift Control Module C3
Connector 8: Transfer Case Shift Control Switch

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: 12048074/2
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094429/J-35616-2A (GY)

Front Axle Actuator

Pin

Wire Color

Circuit No.

Function

A

TN/WH

1695

Axle Switch Signal

B

GY/BK

1570

Front Axle Actuator Control

C

BN

241

Ignition 3 Voltage

D

--

--

Not Available

E

BK

550

Ground

Propshaft Speed Sensor - Front (NP8)


Object Number: 1538760  Size: CH

Connector Part Information

  • OEM: 15449028
  • Service: 88987993
  • Description: 2-Way F 150 GT Series Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 15326267/19
  • Core/Insulation Crimp: E/4
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)

Propshaft Speed Sensor - Front (NP8)

Pin

Wire Color

Circuit No.

Function

A

YE

400

Signal High - Front/VSS High Signal/OSS High Signal

B

PU

401

Signal Low - Front/VSS Low Signal/OSS Low Signal

Propshaft Speed Sensor - Rear (NP8)


Object Number: 1538760  Size: CH

Connector Part Information

  • OEM: 15449028
  • Service: 88987993
  • Description: 2-Way F 150 GT Series Sealed (BK)

Terminal Part Information

  • Terminal/Tray: 15326267/19
  • Core/Insulation Crimp: E/4
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)

Propshaft Speed Sensor - Rear (NP8)

Pin

Wire Color

Circuit No.

Function

A

L-BU

2221

Signal High - Rear

B

D-GN

2222

Signal Low - Rear

Transfer Case Encoder Motor (NP8)


Object Number: 646372  Size: CH

Connector Part Information

  • OEM: 15326654
  • Service: 88986254
  • Description: 8-Way F GT 280 Series Sealed (BK)

Terminal Part Information

  • Pins: A-C
  • Terminal/Tray: 15304719/19
  • Core/Insulation Crimp: E/5
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)
  • Pins: D-G
  • Terminal/Tray: 15304720/19
  • Core/Insulation Crimp: 4/5
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)

Transfer Case Encoder Motor (NP8)

Pin

Wire Color

Circuit No.

Function

A

L-GN/BK

6028

Transfer Case Encoder 5-Volt Reference

B

BN/WH

1555

Channel P Encoder - Signal

C

TN/WH

1554

Encoder Low Reference

D

TN

1552

Motor Control A

E

OG

1553

Motor Control B

F

RD/BK

1342

Battery Positive Voltage

G

TN

1569

Lock Solenoid Control

H

--

--

Not Used

Transfer Case Shift Control Module C1


Object Number: 1715220  Size: CH

Connector Part Information

  • OEM: 13506916
  • Service: 88988265
  • Description: 16-Way F Kaizen 1.5 Series (BU)

Terminal Part Information

  • Pins: 2-6, 9-15
  • Terminal/Tray: 7116-4100-08/9
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12094430/J-35616-2A (GY)
  • Pin: 7
  • Terminal/Tray: 7116-4101-08/9
  • Core/Insulation Crimp: E/A
  • Release Tool/Test Probe: 12094430/J-35616-2A (GY)

Transfer Case Shift Control Module C1

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

GY

6029

5-Volt Reference

3

BN/WH

1555

Channel P Encoder - Signal

4

GY/BK

1694

4WD Low Signal

5

BN

1560

Neutral Indicator Control

6

L-GN/BK

1563

2 'HI' Indicator - Control

7

TN

1569

Lock Solenoid Control

8

--

--

Not Used

9

L-GN/BK

6028

Transfer Case Encoder 5-Volt Reference

10

TN/WH

1554

Encoder Low Reference

11

L-BU

1693

Switch Signal

12

TN/BK

1566

4 'HI' Indicator - Control

13

PU/WH

1565

4 'LO' Indicator - Control

14

PK

1561

AWD Indicator Control

15

GY/BK

1570

Front Axle Actuator Control

16

--

--

Not Used

Transfer Case Shift Control Module C2


Object Number: 1715221  Size: CH

Connector Part Information

  • OEM: 13506917
  • Service: 19115709
  • Description: 16-Way F Kaizen 1.5 Series (L-GY)

Terminal Part Information

  • Terminal/Tray: 7116-4100-08/9
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 12094430/J-35616-2A (GY)

Transfer Case Shift Control Module C2

Pin

Wire Color

Circuit No.

Function

1-2

--

--

Not Used

3

TN/WH

1695

Axle Switch Signal

4

TN

2501

High Speed GMLAN Serial Data Bus-

5

TN/BK

2500

High Speed GMLAN Serial Data Bus+

6

--

--

Not Used

7

D-GN

2222

Signal Low - Rear

8

L-BU

2221

Signal High - Rear

9

PK

239

Ignition 1 Voltage

10

D-BU

5985

Accessory Wakeup Serial Data

11

--

--

Not Used

12

TN

2501

High Speed GMLAN Serial Data Bus-

13

TN/BK

2500

High Speed GMLAN Serial Data Bus+

14

--

--

Not Used

15

YE

400

Signal High - Front/VSS High Signal/OSS High Signal

16

PU

401

Signal Low - Front/VSS Low Signal/OSS Low Signal

Transfer Case Shift Control Module C3


Object Number: 1711023  Size: CH

Connector Part Information

  • OEM: 15466671
  • Service: 19149301
  • Description: 4-Way F GT 280 Series (L-GY)

Terminal Part Information

  • Terminal/Tray: 15304713/19
  • Core/Insulation Crimp: F/D
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)

Transfer Case Shift Control Module C3

Pin

Wire Color

Circuit No.

Function

A

OG

1553

Motor Control B

B

TN

1552

Motor Control A

C

RD/BK

1342

Battery Positive Voltage

D

BK

550

Ground

Transfer Case Shift Control Switch


Object Number: 1710988  Size: CH

Connector Part Information

  • OEM: 13551678
  • Service: 89047364
  • Description: 12-Way F Receptacle 0.64 Series (BK)

Terminal Part Information

  • Terminal/Tray: SAITS-A03T-M064/14
  • Core/Insulation Crimp: P/P
  • Release Tool/Test Probe: J-38125-215/J-35616-64B (L-BU)

Transfer Case Shift Control Switch

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

WH

2283

Rear Wiper/Washer Switch Supply Voltage

3

BN

1560

Neutral Indicator Control

4

PU/WH

6816

Indicator Dimming Control

5

BN/WH

230

Instrument Panel Lamp Dimming Control

6

BK

1050

Ground

7

PK

1561

AWD Indicator Control

8

L-GN/BK

1563

2 'HI' Indicator - Control

9

TN/BK

1566

4 'HI' Indicator - Control

10

PU/WH

1565

4 'LO' Indicator - Control

11

GY

6029

Four Wheel Drive Mode Switch 5-Volt Reference

12

L-BU

1693

Switch Signal