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

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

Transfer Case Shift Control Module


Object Number: 581541  Size: CH

Connector Part Information

    • 12041476
    • 32-Way F Micro-Pack 100 Series (BLU)

Pin

Wire Color

Circuit No.

Function

C1

GRY/BLK

1694

4WD Low Signal

C2

--

--

Not Used

C3

DK GRN/

WHT

1559

4 LO Switch - Signal

C4

DK GRN/

WHT

1562

2 HI Switch - Signal

C5

GRY/BLK

1564

4 HI Switch - Signal

C6

ORN

40

Battery Positive Voltage

C7

--

--

Not Used

C8

BRN

241

Ignition 3 Voltage

C9

BLK/WHT

1554

Encoder Signal Ground

C10

BLK

1050

Ground

C11

LT GRN/BLK

1563

2 HI Indicator - Control

C12

TAN/BLK

1566

4 HI Indicator - Control

C13

--

--

Not Used

C14

PPL/WHT

1565

4 LO Indicator - Control

C15

--

--

Not Used

C16

BLK

1552

Motor A Control

D1

RED

1553

Motor B Control

D2

LT GRN/BLK

584

A/T Shift Lock Control Switch Supply Voltage

D3

ORN

1568

Diagnostic Enable

D4

BRN/WHT

1555

Channel P Encoder - Signal

D5

RED/WHT

1556

Channel C Encoder - Signal

D6

DK BLU/

WHT

1557

Channel A Encoder - Signal

D7

YEL/BLK

1558

Channel B Encoder - Signal

D8

DK GRN/

WHT

817

Vehicle Speed Signal

D9-D11

--

--

Not Used

D12

BLK

1050

Ground

D13

BLK

1050

Ground

D14

ORN

1640

Battery Positive Voltage

D15

ORN

1640

Battery Positive Voltage

D16

PPL

806

Crank 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

GRY/BLK

1564

4 HI Switch - Signal

B

DK GRN/

WHT

1562

2 HI 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

DK GRN/

WHT

1559

4 LO Switch - Signal

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

    • 12045013
    • 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

--

--

Not Used

Transfer Case Encoder Motor


Object Number: 95786  Size: CH

Connector Part Information

    • 12124051
    • 8-Way F (BLK)

Pin

Wire Color

Circuit No.

Function

1

YEL/BLK

1558

Channel B Encoder - Signal

2

DK BLU/

WHT

1557

Channel A Encoder - Signal

3

BLK/WHT

1554

Encoder Signal Ground

4

BRN/WHT

1555

Channel P Encoder - Signal

5

--

--

Not Used

6

RED

1553

Motor Control B

7

BLK

1552

Motor Control A

8

RED/WHT

1556

Channel C Encoder - Signal