GM Service Manual Online
For 1990-2009 cars only
Table 1: C-1 Body Control Module
Table 2: C-2 Body Control Module
Table 3: C-3 Body Control Module

C-1 Body Control Module


Object Number: 255037  Size: CH

Connector Part Information

    • 12160778
    • 24 Way F Micro-Pack 100 Series (BRN)

Pin

Wire Color

Circuit No.

Function

A1

BLK

1850

Ground

A2

ORN

1140

Fused Battery Feed

A3

WHT

194

Power Door Lock Relay Feed - Unlock Coil

A4

LT BLU

195

Power Door Lock Relay Feed - Lock Coil

A5-A6

--

--

Not Used

A7

BLK

755

Delayed Accessory Bus Relay Output Coil - ACC Relay (Uplevel)

A8

DK BLU

1393

Interior Lamp Relay Output - Coil

A9

BLK

28

Horn Relay Output - Coil

A10

--

--

Not Used

A11

LT GRN/BLK

592

Daytime Running Lamp Relay Output - Coil

A12

LT GRN

1037

Serial Data Signal (Class 2)

B1

BLK

1850

Ground

B2

PNK

39

Fused Ignition 1 Feed

B3

RED/WHT

812

Reference Voltage Feed - 12 Volt

B4

ORN

461

Serial Data Signal

B5

--

--

Not Used

B6

LT BLU

14

LH Turn Signal Lamp Input

B7

DK BLU

15

RH Turn Signal Lamp Input

B8

--

--

Not Used

B9

BRN

41

Fused Ignition 3 Output

B10

LT BLU

1134

Park Brake Switch Signal

B11

BLK/WHT

238

Seat Belt Switch Signal

B12

LT BLU

553

Transmission Shift Select Switch Output

C-2 Body Control Module


Object Number: 130690  Size: CH

Connector Part Information

    • 12110206
    • 24 Way F Micro-Pack 100 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A1

YEL

710

Serial Data Signal

A2

ORN/BLK

1057

Sensor Return (Passlock)

A3

GRY/BLK

690

Courtesy Lamp Relay Output (Coil)

A4

LT GRN

1381

LCD Dimming Signal

A5

WHT

1080

Park Lamp Relay Output (Coil)

A6

--

--

Not Used

A7

DK GRN/WHT

1317

Fog Lamp Relay Output (Coil)

A8-A10

--

--

Not Used

A11

WHT

352

Headlamp Relay Feed (Coil)

A12

PPL/WHT

1382

LED Dimming Signal

B1

DK GRN/WHT

817

Vehicle Speed Signal

B2

--

--

Not Used

B3

YEL

1836

Passlock Sensor Signal

B4

--

--

Not Used

B5

PPL

524

Headlamp Dimmer Switch Output (High Beam)

B6

BRN

2409

Fused Interior Park Lamps Feed

B7-B8

--

--

Not Used

B9

LT GRN

80

Key Reminder Switch Signal

B10

--

--

Not Used

B11

DK BLU/WHT

727

Door Latch Switch Signal (Uplevel)

B12

ORN

1732

Inadvertant Power Relay Status

C-3 Body Control Module


Object Number: 362758  Size: CH

Connector Part Information

    • 12191375
    • 16 Way F Micro-Pack 100 Series (PPL)

Pin

Wire Color

Circuit No.

Function

A1

DK BLU/WHT

149

Cargo Lamp Switch Input

A2

DK BLU/WHT

1495

Courtesy Lamp Switch Output

A3

BRN

1356

Flash to Pass Switch Signal

A4

GRY

705

Reference Voltage Feed - 5 Volt

A5

GRY

8

Instrument Panel Lamp Feed

A6

WHT

278

Photocell Signal

A7-B1

--

--

Not Used

B2

ORN

54

Door Jamb Switch Signal - Passenger

B2

LT GRN/BLK

394

Door Handle Switch Signal - LH Front (Uplevel)

B3

LT GRN

262

Door Key Lock Cylinder Switch Signal - Driver (Uplevel)

B4

TAN

126

Door Latch Switch Signal - LH Front

B5

ORN

192

Fog Lamp Switch Input

B6

PPL

328

Interior Lamp Defeat Switch Output

B7-B8

--

--

Not Used