GM Service Manual Online
For 1990-2009 cars only
Table 1: Transfer Case Shift Control Module Connector C1
Table 2: Transfer Case Shift Control Module Connector C2
Table 3: Transfer Case Shift Control Switch Connector C1
Table 4: Transfer Case Shift Control Switch Connector C2
Table 5: Transfer Case Encoder Motor Connector C1
Table 6: Transfer Case Encoder Motor Connector C2
Table 7: Front Axle Vacuum Solenoid
Table 8: Front Axle Indicator Switch
Table 9: Propshaft Speed Sensor - Front
Table 10: Propshaft Speed Sensor - Rear

Transfer Case Shift Control Module Connector 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

TAN

1569

Lock Solenoid Control

E2

--

--

Not Used

E3

PNK

1561

AWD Indicator Control

E4

LT GRN/BLK

1563

2 HI Indicator - Control

E5

BRN/WHT

1555

Channel P Encoder - Signal

E6

RED/WHT

1556

Channel C Encoder - Signal

E7

YEL/BLK

1558

Channel B Encoder - Signal

E8

DK BLU/

WHT

1557

Channel A Encoder - Signal

E9

DK GRN/

WHT

1133

ATC Class 2 Serial Data

E10

BRN

241

Ignition 3 Voltage

E11

PPL

806

Crank Voltage

E12

YEL

400

Signal High - Front

E13

PPL

401

Signal Low - Front

E14

BLK/WHT

1695

Axle Switch Signal

E15

--

--

Not Used

E16

BLK/WHT

451

Ground

F1

PPL/WHT

1565

4 LO Indicator - Control

F2

TAN/BLK

1566

4 HI Indicator - Control

F3

BRN

1560

Neutral Indicator Control

F4

GRY/BLK

1570

Axle Actuator - Control

F5

LT BLU

2221

Signal High - Rear

F6

DK GRN

2222

Signal Low - Rear

F7

GRY/BLK

1694

4WD Low Signal

F8- F11

--

--

Not Used

F12

BLK/WHT

1554

Encoder Signal Ground

F13

LT GRN/BLK

431

8 Volt Reference

F14

LT GRN/BLK

431

8 Volt Reference

F15

--

--

Not Used

F16

LT BLU

1693

Switch Signal

Transfer Case Shift Control Module Connector 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

1050

Ground

D

ORN

1640

Battery Positive Voltage

Transfer Case Shift Control Switch Connector C1


Object Number: 62463  Size: CH

Connector Part Information

    • 12064766
    • 8-Way F Metri-Pack 150 Series (BLU)

Pin

Wire Color

Circuit No.

Function

A

LT GRN/BLK

431

8 Volt Reference

B

LT BLU

1693

Switch Signal

C

PPL/WHT

1565

4 LO Indicator - Control

D

TAN/BLK

1566

4 HI Indicator - Control

E

LT GRN/BLK

1563

2 HI Indicator - Control

F

PNK

1561

AWD Indicator Control

G

BLK

1050

Ground

H

GRY

1220

Instrument Panel Lamp Fuse Supply Voltage - 2

Transfer Case Shift Control Switch Connector C2


Object Number: 130635  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

PPL/WHT

1382

LED Dimming Signal

C

BRN

241

Ignition 3 Voltage

D

BRN

1560

Neutral Indicator Control

Transfer Case Encoder Motor Connector C1


Object Number: 365977  Size: CH

Connector Part Information

    • 12191399
    • 4-Way F Metri-Pack 280 Series, Flexlock, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

1552

Motor Control A

B

RED

1553

Motor Control B

C

ORN

1640

Battery Positive Voltage

D

TAN

1569

Lock Solenoid Control

Transfer Case Encoder Motor Connector C2


Object Number: 697039  Size: CH

Connector Part Information

    • 12052848
    • 6-Way F Metri-Pack 150 Series, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK/WHT

1554

Encoder Signal Ground

B

DK BLU/

WHT

1557

Channel A Encoder - Signal

C

RED/WHT

1556

Channel C Encoder - Signal

D

YEL/BLK

1558

Channel B Encoder - Signal

E

LT GRN/BLK

431

8 Volt Reference

F

BRN/WHT

1555

Channel P Encoder - Signal

Front Axle Vacuum Solenoid


Object Number: 635009  Size: CH

Connector Part Information

    • 12052641
    • 2-Way F Metri-Pack 150 Series, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

BRN

241

Ignition 3 Voltage

B

GRY/BLK

1570

Axle Actuator - Control

Front Axle Indicator Switch


Object Number: 516604  Size: CH

Connector Part Information

    • 12103584
    • 2-Way F Weather Pack Connector (BRN)

Pin

Wire Color

Circuit No.

Function

A

BRN

241

Ignition 3 Voltage

B

BLK/WHT

1695

Axle Switch Signal

Propshaft Speed Sensor - Front


Object Number: 237066  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

LT BLU

2221

Signal High - Rear

B

DK GRN

2222

Signal Low - Rear