GM Service Manual Online
For 1990-2009 cars only
Table 1: Front Axle Actuator
Table 2: Propshaft Speed Sensor - Front
Table 3: Propshaft Speed Sensor - Rear
Table 4: Transfer Case - Encoder Motor
Table 5: Transfer Case Shift Control Module - C1
Table 6: Transfer Case Shift Control Module - C2
Table 7: Transfer Case Shift Control Module - C3
Table 8: Transfer Case Shift Control Switch - C1
Table 9: Transfer Case Shift Control Switch - C2

Front Axle Actuator


Object Number: 655795  Size: CH

Connector Part Information

    • 15324541
    • 4-Way F Metri-Pack 150 Series Sealed (BU)

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

--

--

Not Used

E

BK

2150

Ground

Propshaft Speed Sensor - Front


Object Number: 666646  Size: CH

Connector Part Information

    • 15336024
    • 2-Way F GT 150 Series Sealed (BK)

Pin

Wire Color

Circuit No.

Function

1

YE

400

Signal High - Front

2

PU

401

Signal Low - Front

Propshaft Speed Sensor - Rear


Object Number: 666646  Size: CH

Connector Part Information

    • 15336024
    • 2-Way F GT 150 Series Sealed (BK)

Pin

Wire Color

Circuit No.

Function

1

L-BU

2221

Signal High - Rear

2

D-GN

2222

Signal Low - Rear

Transfer Case - Encoder Motor


Object Number: 831388  Size: CH

Connector Part Information

    • 15326906
    • 10-Way F GT 280 Series Sealed (BK)

Pin

Wire Color

Circuit No.

Function

A

L-GN/BK

431

5-Volt Reference

B

BN/WH

1555

Encoder Signal

C

BK/WH

1554

Encoder Low Reference

D

BK

1552

Motor Control A

E

RD

1553

Motor Control B

F

OG

1640

Battery Positive Voltage

G

TN

1569

Lock Solenoid Control

H

--

--

Not Used

Transfer Case Shift Control Module - C1


Object Number: 744295  Size: CH

Connector Part Information

    • 12084944
    • 16-Way F Micro-Pack 100 Series (BK)

Pin

Wire Color

Circuit No.

Function

A1

D-GN/WH

1133

ATC Class 2 Serial Data

A2

L-BU

1296

AXLE Actuator - Control

A3

PK

1561

AWD Indicator Control

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

Encoder Low Reference

A8

BK/WH

1851

Ground

B1

--

--

Not Used

B2

TN

1569

Lock Solenoid Control

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

    • 12084945
    • 16-Way F Micro-Pack 100 Series (GY)

Pin

Wire Color

Circuit No.

Function

A1

PU

401

Signal Low - Front

A2

YE

400

Signal High - Front

A3-A7

--

--

Not Used

A8

L-GN/BK

431

5-Volt Reference

B1

L-BU

2221

Signal High - Rear

B2

D-GN

2222

Signal Low - Rear

B3-B5

--

--

Not Used

B6

BK/WH

1695

Axle Switch Signal

B7

--

--

Not Used

B8

GY

596

5-Volt Reference

Transfer Case Shift Control Module - C3


Object Number: 62450  Size: CH

Connector Part Information

    • 12052856
    • 4-Way F Metri-Pack 280 Series (BK)

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: 39746  Size: CH

Connector Part Information

    • 12064862
    • 8-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

BK

1050

Ground

B

PK

1561

AWD Indicator Control

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: 130635  Size: CH

Connector Part Information

    • 12045813
    • 4-Way F Metri-Pack 150 Series (NA)

Pin

Wire Color

Circuit No.

Function

A

L-BU

1693

Switch Signal

B

L-GN/BK

1563

2 HI Indicator Control

C

PU/WH

1565

4 LO Indicator Control

D

TN/BK

1566

4 HI Indicator Control