GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1999 🢒 Chevy Suburban - 4WD 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Transfer Case Control Connector End Views
Table 1: Transfer Case Shift Control Module C1
Table 2: Transfer Case Shift Control Module Connector C2
Table 3: Transfer Case Select Switch Connector C1
Table 4: Transfer Case Select Switch, Connector C2
Table 5: Transfer Case Encoder Motor Connector C1
Table 6: Transfer Case Encoder Motor Connector C2
Table 7: Front Axle Actuator
Table 8: Prop Shaft Speed Sensor, Front Connector
Table 9: Prop Shaft Speed Sensor, Rear Connector

Transfer Case Shift Control Module C1


Object Number: 73221 Size: CH

Connector Part Information
    • 12052107
    • ASM 16F 100 Series (BLK)

Pin

Wire Color

Circuit No.

Function

E1

TAN

1569

Transfer Case Lock Solenoid Output

E2

LT BLU/BLK

1567

Service 4WD/AWD Indicator Lamp Output

E3

PNK

1561

AWD Indicator Lamp Output

E4

LT GRN/BLK

1563

2 'HI' Indicator Lamp Output

E5

BRN/WHT

1555

Transfer Case Position Switch Encoder Signal - Channel P

E6

RED/WHT

1556

Transfer Case Position Switch Encoder Signal - Channel C

E7

YEL/BLK

1558

Transfer Case Position Switch Encoder Signal - Channel B

E8

DK BLU/WHT

1557

Transfer Case Position Switch Encoder Signal - Channel A

E9

PPL

1807

Serial Data Signal - Class B - 10400 BAUD - Primary

E10

BRN

241

Fuse Output - Ignition 3 - Type III Fuse

E11

--

--

Not Used

E12

YEL

400

Front Propshaft Sensor Signal

E13

PPL

401

Front Propshaft Sensor Return

E14

BLK/WHT

1695

4WD Front Wheel Lock Telltale Feed

E15

--

--

Not Used

E16

BLK/WHT

451

ECM Ground

F1

PPL/WHT

1565

4 'LO' Indicator Lamp Output

F2

TAN/BLK

1566

4 'HI' Indicator Lamp Output

F3

BRN

1560

Neutral Indicator Lamp Output

F4

GRY/BLK

1570

Front Axle Actuator Output

F5

LT BLU

2221

Rear Propshaft Signal

F6

DK GRN

2222

Rear Propshaft Return

F7

GRY/BLK

1694

4WD Switch Signal - Low

F8-F11

--

--

Not Used

F12

BLK/WHT

1554

Transfer Case Encoder Signal Return

F13

LT GRN/BLK

431

Reference Voltage Feed - 8 Volt Reference

F14

LT GRN/BLK

431

Reference Voltage Feed - 8 Volt Reference

F15

LT GRN

275

Transmission Mounted Neutral Safety Switch Output - Park

F16

LT BLU/BLK

1693

4WD Switch Signal

Transfer Case Shift Control Module Connector C2


Object Number: 62450 Size: CH

Connector Part Information
    • 12052856
    • CONN 4F M/P 280 (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

1552

Transfer Case Motor Feed - CW

B

RED

1553

Transfer Case Motor Feed - CCW

C

ORN

1640

Fuse Output - Battery - Type III Fuse

D

TAN

1569

Transfer Case Lock Solenoid Output

Transfer Case Select Switch Connector C1


Object Number: 62463 Size: CH

Connector Part Information
    • 12064766
    • CONN 8F M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT GRN/BLK

431

Reference Voltage Feed - 8 Volt Reference

B

LT BLU/BLK

1693

4WD Switch Signal

C

PPL/WHT

1565

4 'LO' Indicator Lamp Output

D

TAN/BLK

1566

4 'HI' Indicator Lamp Output

E

LT GRN/BLK

1563

2 'HI' Indicator Lamp Output

F

PNK

1561

4WD Indicator Lamp Output

G

BLK

150

Ground

H

GRY

8

IP Lamp Feed

Transfer Case Select Switch, Connector C2


Object Number: 38608 Size: CH

Connector Part Information
    • 12045813
    • CONN 4F M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

PPL/WHT

1382

LED Dimming Signal

C

BRN

241

Use Output - Ignition 3 - Type III Fuse

D

BRN

1560

Neutral Indicator Lamp Output

Transfer Case Encoder Motor Connector C1


Object Number: 365977 Size: CH

Connector Part Information
    • 12191399
    • 4F Metri-Pack 280 Series, Flexlock, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

1552

Transfer Case Motor Feed - Clockwise

B

RED

1553

Transfer Case Motor Feed - Counterclockwise

C

ORG

1640

Fuse Output - Battery - Type III Fuse

D

TAN

1569

Transfer Case Lock Solenoid Output

Transfer Case Encoder Motor Connector C2


Object Number: 62449 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

Transfer Case Encoder Signal Return

B

DK BLU/WHT

1557

Transfer Case Position Switch Encoder Signal

C

RED/WHT

1556

Transfer Case Position Switch Encoder Signal

D

YEL/BLK

1558

Transfer Case Position Switch Encoder Signal

E

LT GRN/BLK

431

Reference Voltage Feed - 8 Volt Reference

F

BRN/WHT

1555

Transfer Case Position Switch Encoder Signal

Front Axle Actuator


Object Number: 365944 Size: CH

Connector Part Information
    • 12077591
    • ASM 5F M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK/WHT

1695

4WD Front Wheel Lock Telltale Feed

B

GRY/BLK

1570

Front Axle Actuator Output

C

BRN

241

Fuse Output - Ignition 3 - Type II Output

D

-

-

Not Used

E

BLK

150

Ground

Prop Shaft Speed Sensor, Front Connector


Object Number: 232831 Size: CH

Connector Part Information
    • 12162194
    • 2F Metri-Pack 150.2 Series, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

YEL

400

Vehicle Speed Sensor Signal

B

PPL

401

Vehicle Speed Sensor Return

Prop Shaft Speed Sensor, Rear Connector


Object Number: 232831 Size: CH

Connector Part Information
    • 12162194
    • 2F Metri-Pack 150.2 Series, Sealed (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

2221

Vehicle Speed Sensor Signal

B

DK GRN

2222

Vehicle Speed Sensor Return