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

Transfer Case Shift Control Module C1


Object Number: 73221  Size: CH

Connector Part Information

    • 12052107
    • 32-Way F Micro-Pack 100 Series (ORN)

Pin

Wire Color

Circuit No.

Function

E1-E8

--

--

Not Used

E9

DK GRN/WHT

1133

ATC Class 2 Serial Data

E10

BRN

441

Ignition 3 Voltage

E11

--

--

Not Used

E12

YEL

400

Signal High - Front

E13

PPL

401

Signal Low - Front

E14

--

--

Not Used

E15

BLK

750

Ground

E16

BLK

750

Ground

F1-F4

--

--

Not Used

F5

LT BLU

2221

Signal High - Rear

F6

DK GRN

2222

Signal Low - Rear

F7-F16

--

--

Not Used

Transfer Case Shift Control Module C2


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

1552

Motor Control A

B

RED

1553

Motor Control B

C

BLK

750

Ground

D

ORN

1540

Battery Positive Voltage

Propshaft Speed Sensor - Front


Object Number: 237066  Size: CH

Connector Part Information

    • 12162194
    • 2-Way F Metri-Pack 150.2 Series, Sealed, Pull-To-Seat (BLK)

Pin

Wire Color

Circuit No.

Function

A

YEL

400

Signal High - Front

B

PPL

401

Signal Low - Front

Propshaft Speed Sensor - Rear


Object Number: 237066  Size: CH

Connector Part Information

    • 12162194
    • 2-Way F Metri-Pack 150.2 Series, Sealed, Pull-To-Seat (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

2221

Signal High - Rear

B

DK GRN

2222

Signal Low - Rear

Transfer Case Encoder Motor


Object Number: 684799  Size: CH

Connector Part Information

    • 12077900
    • 2-Way F Metri-Pack 280 Series, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

1552

Motor Control A

B

RED

1553

Motor Control B