Transfer Case Control Connector End Views. GMC Truck GMC K Sierra

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC K Sierra - 4WD 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Transfer Case Control Connector End Views

Table 1:	C1 -- Automatic Transfer Case (ATC) Control Module
Table 2:	Automatic Transfer Case (ATC) Control Module C2
Table 3:	Automatic Transfer Case (ATC) Select Switch C-1
Table 4:	Automatic Transfer Case (ATC) Select Switch C-2
Table 5:	Transfer Case -- Encoder Motor -- C-1
Table 6:	Transfer Case -- Encoder Motor -- C-2

C1 -- Automatic Transfer Case (ATC) Control Module

Connector Part Information

•

12052107

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

Wire Color

Circuit No.

Function

TAN

1569

Transfer Case Lock Solenoid Output

Not Used

PNK

1561

S4WD Indicator Lamp Output

LT GRN/BLK

1563

2 HI Indicator Lamp Output

BRN/WHT

1555

Transfer Case Position Switch Encoder Signal (Channel P)

RED/WHT

1556

Transfer Case Position Switch Encoder Signal (Channel C)

YEL/BLK

1558

Transfer Case Position Switch Encoder Signal (Channel B)

DK BLU/WHT

1557

Transfer Case Position Switch Encoder Signal (Channel A)

DK GRN/WHT

1133

Serial Data Signal - Class 2

E10

BRN

241

Fused Ignition 3 Feed

E11

Not Used

E12

YEL

400

Vehicle Speed Sensor Signal

E13

PPL

401

Vehicle Speed Sensor Return

E14

BLK/WHT

1695

Four Wheel Drive Front Wheel Lock Telltale Feed

E15

Not Used

E16

BLK

1850

Ground

PPL/WHT

1565

4 LO Indicator Lamp Output

TAN/BLK

1566

4 HI Indicator Lamp Output

BRN

1560

Neutral Indicator Lamp Output

LT BLU

1296

Four Wheel Drive Relay Feed - Coil

LT BLU

2221

Vehicle Speed Sensor Signal

DK GRN

2222

Vehicle Speed Sensor Return

GRY/BLK

1694

Four Wheel Drive Switch Signal - Low

F8 - F11

Not Used

F12

BLK/WHT

1554

Transfer Case Encoder Switch Signal

F13

LT GRN/BLK

431

Reference Voltage Feed - 8 Volts

F14

LT GRN/BLK

431

Reference Voltage Feed - 8 Volts

F15

Not Used

F16

LT BLU

1693

Four Wheel Drive Switch Signal

Automatic Transfer Case (ATC) Control Module C2

Connector Part Information

•

12052856

•	4 Way F Metri-Pack 280 Series (BLK)

Wire Color

Circuit No.

Function

BLK

1552

Transfer Case Motor Feed - Clockwise

RED

1553

Transfer Case Motor Feed - Counterclockwise

BLK

2150

Ground

ORN

1640

Fused Battery Feed

Automatic Transfer Case (ATC) Select Switch C-1

Connector Part Information

•

12045813

•	4 Way F Metri-Pack 150 (NAT)

Wire Color

Circuit No.

Function

LT GRN/BLK

431

Reference Voltage Feed - 8 Volt Reference

LT GRN/BLK

1563

2 HI Indicator Lamp Output

PPL/WHT

1565

4 LO Indicator Lamp Output

TAN/BLK

1566

4 HI Indicator Lamp Output

Automatic Transfer Case (ATC) Select Switch C-2

Connector Part Information

•

12064862

•	8 Way F Metri-Pack 150 Series (BLK)

Wire Color

Circuit No.

Function

BLK

1850

Ground

PNK

1561

Indicator Lamp Output (Auto 4WD)

BRN

1560

Indicator Lamp Output (Neutral)

Not Used

PPL/WHT

1382

LED Dimming Signal

GRY

Instrument Panel Lamp Feed

PNK

Fused Ignition 1 Feed

LT BLU

1693

ATC Select Switch Signal

Transfer Case -- Encoder Motor -- C-1

Connector Part Information

•

12191399

•	4 Way F Metri-Pack 280 Series (BLK)

Wire Color

Circuit No.

Function

BLK

1552

Transfer Case Motor Feed - Clockwise

RED

1553

Transfer Case Motor Feed - Counterclockwise

ORN

1640

Fused Battery Feed

TAN

1569

Transfer Case Lock Solenoid Output

Transfer Case -- Encoder Motor -- C-2

Connector Part Information

•

12052848

•	6 Way M Metri-Pack 150 Series (BLK)

Wire Color

Circuit No.

Function

BLK/WHT

1554

Transfer Case Encoder Signal Return

DK BLU/WHT

1557

Transfer Case Postion Switch Encoder Signal - Channel A

RED/WHT

1556

Transfer Case Postion Switch Encoder Signal - Channel C

YEL/BLK

1558

Transfer Case Postion Switch Encoder Signal - Channel B

LT GRN/BLK

431

Reference Voltage Feed - 8 Volt

BRN/WHT

1555

Transfer Case Postion Switch Encoder Signal - Channel P