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

Propshaft Speed Sensor - Front


Object Number: 666646  Size: CH

Connector Part Information

    • 15336024
    • 2-Way F GT 150 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 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: 646412  Size: CH

Connector Part Information

    • 15326642
    • 5-Way F GT 280 Sealed 5.8 (BK)

Pin

Wire Color

Circuit No.

Function

A

GY

605

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

Transfer Case Shift Control Module C1


Object Number: 73152  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A1

DK GN/WH

1133

Class 2 Serial Data

A2-A6

--

--

Not Used

A7

BK/WH

1554

Encoder Low Reference

A8

--

--

Not Used

B1-B5

--

--

Not Used

B6

BN/WH

1555

Encoder Signal

B7

--

--

Not Used

B8

BK/WH

751

Ground

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

GY

605

5-Volt Reference

B1

L-BU

2221

Signal High - Rear

B2

D-GN

2222

Signal Low - Rear

B3-B8

--

--

Not Used

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

2250

Ground

B

OG

1640

Battery Positive Voltage

C

BK

1552

Motor Control A

D

RD

1553

Motor Control B