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

Front Axle Actuator


Object Number: 655795  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

BLK/WHT

1695

Axle Switch Signal

B

LT BLU

1296

Axle Actuator - Control

C

BRN

241

Ignition 3 Voltage

E

BLK

2150

Ground

Transfer Case Shift Control Module - C1


Object Number: 744295  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A1

DK GRN/

WHT

1133

ATC Class 2 Serial Data

A2

LT BLU

1296

4WD Relay Coil Supply Voltage

A3

--

--

Not Used

A4

PPL/WHT

1565

4 "LO" Indicator-Control

A5

TAN/BLK

1566

4 "HI" Indicator-Control

A6

LT BLU

1693

Switch Signal

A7

BLK/WHT

1554

Encoder Low Reference

A8

BLK/WHT

1851

Ground

B1-B2

--

--

Not Used

B3

LT GRN/BLK

1563

2 "HI" Indicator-Control

B4

BRN

1560

Neutral Indicator Control

B5

GRY/BLK

1694

4WD Low Signal

B6

BRN/WHT

1555

Encoder Signal

B7-B8

--

--

Not Used

Transfer Case Shift Control Module - C2


Object Number: 73152  Size: CH

Connector Part Information

    • 12064860
    • 16-Way F Metri-Pack 100 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A1

PPL

401

Signal Low-Front

A2

YEL

400

Signal High-Front

A3-A7

--

--

Not Used

A8

LT GRN/BLK

431

5 Volt Reference

B1

LT BLU

2221

Signal High-Rear

B2

DK GRN

2222

Signal Low-Rear

B3-B5

--

--

Not Used

B6

BLK/WHT

1695

4WD Engaged Signal

B7

--

--

Not Used

B8

GRY

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 (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

2150

Ground

B

ORN

1640

Battery Positive Voltage

C

BLK

1552

Motor Control A

D

RED

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 (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

1050

Ground

B

--

--

Not Used

C

BRN

1560

Neutral Indicator Control

D

--

--

Not Used

E

PPL/WHT

1382

LED Dimming Supply

F

BRN/WHT

230

Instrument Panel Lamps Dimming Control

G

BRN

241

Ignition 3 Voltage

H

GRY

596

5 Volt Reference

Transfer Case Shift Control Switch - C2


Object Number: 73231  Size: CH

Connector Part Information

    • 12064860
    • 6-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A-B

--

--

Not Used

C

TAN/BLK

1566

4 "HI" Indicator-Control

D

PPL/WHT

1565

4 "LO" Indicator-Control

E

LT GRN/BLK

1563

2 "HI" Indicator-Control

F

LT BLU

1693

Switch Signal

Transfer Case Encoder Motor


Object Number: 646412  Size: CH

Connector Part Information

    • 15326642
    • 5-Way F GT 280 Series Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT GRN/

BLK

431

5 Volt Reference

B

BRN/WHT

1555

Encoder Signal

C

BLK/WHT

1554

Encoder Low Reference

D

BLK

1552

Motor Control A

E

RED

1553

Motor Control B