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

Front Axle Actuator


Object Number: 646430  Size: CH

Connector Part Information

    • 15326815
    • 4-Way F GT 150 Sealed 4.0 (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

1296

Axle Actuator - Control

B

BLK

350

Ground

C

BLK/WHT

1695

Axle Switch Signal

D

BRN

241

Ignition 3 Voltage

Propshaft Speed Sensor -- Front


Object Number: 666646  Size: CH

Connector Part Information

    • 15336024
    • 2-Way F GT 150 Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

1

YEL

400

Signal High - Front

2

PPL

401

Signal Low - Front

Propshaft Speed Sensor -- Rear


Object Number: 666646  Size: CH

Connector Part Information

    • 15336024
    • 2-Way F GT 150 Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

1

LT BLU

2221

Signal High - Rear

2

DK GRN

2222

Signal Low - Rear

Transfer Case Encoder Motor


Object Number: 646372  Size: CH

Connector Part Information

    • 15326654
    • 8-Way F GT 280 Sealed 5.8 (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT GRN/

BLK

431

8 Volt Reference

B

BRN/WHT

1555

Channel P Encoder Signal

C

BLK/WHT

1554

Encoder Signal Ground

D

BLK

1552

Motor Control A

E

RED

1553

Motor Control B

F

ORN

1640

Battery Positive Voltage

G

TAN

1569

Lock Solenoid Control

H

--

--

Not Used

Transfer Case Shift Control Module C1


Object Number: 73152  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

Axle Actuator - Control

A3

PNK

1561

AWD Indicator Control

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 Signal Ground

A8

--

--

Not Used

B1

--

--

Not Used

B2

TAN

1569

Lock Solenoid Control

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

Channel P Encoder Signal

B7

--

--

Not Used

B8

BLK/WHT

751

Ground

Transfer Case Shift Control Module C2


Object Number: 73152  Size: CH

Connector Part Information

    • 12084945
    • 16-Way F Micro-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

8 Volt Reference

B1

LT BLU

2221

Signal High - Rear

B2

DK GRN

2222

Signal Low - Rear

B3-B5

--

--

Not Used

B6

BLK/WHT

1695

Axle Switch 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

2250

Ground

B

ORN

1640

Battery Positive Voltage

C

BLK

1552

Motor Control A

D

RED

1553

Motor Control B

Transfer Case Shift Control Switch


Object Number: 647976  Size: CH

Connector Part Information

    • 15332161
    • 12-Way F GT 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

PPL/WHT

1565

4 'LO' Indicator - Control

B

PPL/WHT

1382

LED Dimming Signal

C

BRN/WHT

230

Instrument Panel Lamps Dimming Control

D

BLK

2250

Ground

E

TAN/BLK

1566

4 'HI' Indicator - Control

F

PNK

1561

AWD Indicator Control

G

BRN

1560

Neutral Indicator Control

H

BRN

241

Ignition 3 Voltage

J

GRY

596

5 Volt Reference

K

--

--

Not Used

L

LT GRN/

BLK

1563

2 'HI' Indicator - Control

M

LT BLU

1693

Switch Signal