GM Service Manual Online
For 1990-2009 cars only
Connector 1: Accessory Switch
Connector 2: Front Axle Actuator
Connector 3: Transfer Case 2/4 Wheel Indicator Switch
Connector 4: Transfer Case Encoder Motor
Connector 5: Transfer Case Neutral Switch
Connector 6: Transfer Case Shift Control Module C1
Connector 7: Transfer Case Shift Control Module C2

Accessory Switch


Object Number: 802513  Size: CH

Connector Part Information

  • OEM: 15332169
  • Service: 88986447
  • Description: 14-Way F GT 150 Series (BK)

Terminal Part Information

  • Pins: A, B, B, C, D, E, F, G, H, J, J, L, M, N, P
  • Terminal/Tray: 12191812/19
  • Core/Insulation Crimp: E/C
  • Release Tool/Test Probe: 15315247/J-35616-2A (GY)

Accessory Switch

Pin

Wire Color

Circuit No.

Function

A

PK

339

Ignition 1 Voltage

B

L-GN/BK

1563

2-HI Indicator - Control (4WD)

PU/WH

1572

TCS Requested Indicator Control (NW7)

C

BN

9

Park Lamp Supply Voltage

D

TN/BK

2308

Passenger Air Bag Off Indicator Control

E

PK

2307

Passenger Air Bag On Indicator Control

F

BN

1560

Neutral Indicator Control (4WD)

G

GY

8

Instrument Panel Lamp Dimmer Switch Signal

H

BK

2050

Ground

J

TN/BK

1566

4-HI Indicator - Control (4WD)

BN/WH

1571

Traction Control Switch Signal (NW7)

K

--

--

Not Used

L

YE

234

Seat Belt Indicator Control

M

GY/BK

1694

5-Volt Reference (4WD)

N

L-BU/BK

1693

Switch Signal Low (4WD)

P

PU/WH

1565

4-LO Indicator - Control (4WD)

Front Axle Actuator


Object Number: 1333935  Size: CH

Connector Part Information

  • OEM: 12077591
  • Service: 12117277
  • Description: 5-Way F Metri-Pack 150 Series Sealed (BK)

Terminal Part Information

  • Pins: A, B, C, E
  • Terminal/Tray: 12048074/2
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094429/J-35616-2A (GY)

Front Axle Actuator

Pin

Wire Color

Circuit No.

Function

A

BK/WH

1695

Axle Switch Signal

B

L-BU

1296

Axle Actuator - Control

C

PK

1539

Ignition 1 Voltage

D

--

--

Not Used

E

BK

550

Ground

Transfer Case 2/4 Wheel Indicator Switch


Object Number: 1334538  Size: CH

Connector Part Information

  • OEM: 15327093
  • Service: 88987840
  • Description: 2-Way F 070 SWP Series Sealed (GY)

Terminal Part Information

  • Terminal/Tray: 7116-1471/12
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094429/J-35616-33 (YE)

Transfer Case 2/4 Wheel Indicator Switch

Pin

Wire Color

Circuit No.

Function

1

TN

1569

2WD/4WD Signal

2

BK

550

Ground

Transfer Case Encoder Motor


Object Number: 646400  Size: CH

Connector Part Information

  • OEM: 15326835
  • Service: 88986452
  • Description: 8-Way F GT 150 Series Sealed 4.0 (BK)

Terminal Part Information

  • Pins: A, B, C, E, F, G, H
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Transfer Case Encoder Motor

Pin

Wire Color

Circuit No.

Function

A

D-BU/WH

1557

Channel A Encoder - Signal

B

RD

1553

Motor Control B

C

BK

1552

Motor Control A

D

--

--

Not Used

E

BK

550

Ground

F

YE/BK

1558

Channel B Encoder - Signal

G

RD/WH

1556

Channel C Encoder - Signal

H

BN/WH

1555

Channel P Encoder - Signal

Transfer Case Neutral Switch


Object Number: 1334528  Size: CH

Connector Part Information

  • OEM: 10763359
  • Service: 88987929
  • Description: 2-Way F SWP 070 Series Sealed (BN)

Terminal Part Information

  • Terminal/Tray: 7116-1471/12
  • Core/Insulation Crimp: E/1
  • Release Tool/Test Probe: 12094429/J-35616-33 (YE)

Transfer Case Neutral Switch

Pin

Wire Color

Circuit No.

Function

1

GY

2281

Neutral Switch Signal

2

BK

550

Ground

Transfer Case Shift Control Module C1


Object Number: 1334450  Size: CH

Connector Part Information

  • OEM: 15383128
  • Service: 88953423
  • Description: 16-Way F (BK)

Terminal Part Information

  • Pins: 1, 2, 3, 4, 7, 8, 9, 10, 11, 12, 13, 14
  • Terminal/Tray: 173716-1/7
  • Core/Insulation Crimp: E/4
  • Release Tool/Test Probe: 15315247/J-35616-16 (L-GN)

Transfer Case Shift Control Module C1

Pin

Wire Color

Circuit No.

Function

1

BK

2050

Ground

2

RD

1553

Motor Control B

3

BK

1552

Motor Control A

4

L-BU

1296

Axle Actuator - Control

5-6

--

--

Not Used

7

D-GN/WH

1559

4-LO Switch - Signal

8

OG

1540

Battery Positive Voltage

9

BK

2050

Ground

10

L-GN/BK

1563

2-HI Indicator - Control

11

TN/BK

1566

4-HI Indicator - Control

12

PU/WH

1565

4-LO Indicator - Control

13

BN

1560

Neutral Indicator Control

14

L-BU

1693

Switch Signal Low

15-16

--

--

Not Used

Transfer Case Shift Control Module C2


Object Number: 1334543  Size: CH

Connector Part Information

  • OEM: 15383127
  • Service: 88953394
  • Description: 20-Way F (BK)

Terminal Part Information

  • Pins: 6, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20
  • Terminal/Tray: 173716-1/7
  • Core/Insulation Crimp: E/4
  • Release Tool/Test Probe: 15315247/J-35616-16 (L-GN)

Transfer Case Shift Control Module C2

Pin

Wire Color

Circuit No.

Function

1-5

--

--

Not Used

6

D-BU/WH

1557

Channel A Encoder - Signal

7-9

--

--

Not Used

10

PK

339

Ignition 1 Voltage

11

GY

2281

Neutral Switch Signal

12

BK/WH

1695

Axle Switch Signal

13

TN

1569

2WD/4WD Signal

14

RD/WH

1556

Channel C Encoder - Signal

15

YE/BK

1558

Channel B Encoder - Signal

16

PU

1807

Class 2 Serial Data

17

BN/WH

1555

Channel P Encoder - Signal

18

--

--

Not Used

19

PU

1807

Class 2 Serial Data

20

GY/BK

1694

5-Volt Reference