GM Service Manual Online
For 1990-2009 cars only
Table 1: Tow/Haul Switch Connector
Table 2: Vehicle Speed Sensor (VSS) Assembly Connector, Wiring Harness Side - Late Production
Table 3: Vehicle Speed Sensor (VSS) Assembly Connector, Wiring Harness Side - Early Production
Table 4: Park/Neutral Position Switch (C1)
Table 5: Park/Neutral Position Switch (C2)

Tow/Haul Switch Connector


Object Number: 39660  Size: CH

Connector Part Information

    • 12047785
    • 4-Way Conn 4 F M/P 150 (BK)

Pin

Wire Color

Circuit No.

Function

A

BK

350

Ground

B

BN/WH

230

Instrument Panel Lamps Dimming Control

C

--

--

Not Used

D

L-BU

1788

Tow/Haul Switch Signal

Vehicle Speed Sensor (VSS) Assembly Connector, Wiring Harness Side - Late Production


Object Number: 900247  Size: CH

Connector Part Information

    • 15359366
    • Asm Conn 2F GT 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

YEL

400

VSS Signal

B

PPL

401

VSS Ground

Vehicle Speed Sensor (VSS) Assembly Connector, Wiring Harness Side - Early Production


Object Number: 666646  Size: CH

Connector Part Information

    • 15336024
    • Asm Conn 2F GT 150 (BLK)

Pin

Wire Color

Circuit No.

Function

1

YEL

400

VSS Signal

2

PPL

401

VSS Ground

Park/Neutral Position Switch (C1)


Object Number: 535904  Size: CH

Connector Part Information

    • 12191757
    • 4-Way Female M/P 150 (BLK)

Pin

Wire Color

Circuit No.

Function

A

TAN/WHT

771

Transmission Position Switch Signal A

B

GRY

773

Transmission Position Switch Signal C

C

WHT

776

Transmission Position Switch Signal P

D

YEL

772

Transmission Position Switch Signal B

Park/Neutral Position Switch (C2)


Object Number: 535900  Size: CH

Connector Part Information

    • 12129840
    • 7-Way Female M/P Mixed (GRY)

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

LT GRN

275

Neutral Safety Switch Park Signal

C

PNK

339

Ignition 1 Voltage

D

BLK

1250

Ground

E

PNK

139

Crank Voltage

F

DK GRN

1324

Back-up Lamp Supply Voltage

G

DK GRN

1433

Neutral Safety Switch Park/Neutral Signal