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 Positive Voltage

A3

WHT

194

Power Door Lock Relay Feed - Unlock Coil

A4

LT BLU

195

Power Door Lock Relay Feed - Lock Coil

A5

BRN

1295

Electronic Variable Orifice (EVO) Solenoid Output

A6

WHT

1294

Electronic Variable Orifice (EVO) Solenoid Feed

A7

BLK

755

Delayed Accessory Bus Relay Output Coil

A8

DK BLU

1393

Interior Lamp Relay Control - 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 Positive Voltage

B3

RED/WHT

812

Reference Voltage Feed - 12 Volt

B4

ORN

461

Serial Data Signal

B5

GRY

705

Reference Voltage Feed - 5 Volt

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

Tow/Haul Switch Input

C-2 Body Control Module


Object Number: 130690  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A1

YEL

710

Serial Data Signal (Class 2)

A2

ORN/BLK

1057

Sensor Return (Passlock)

A3

GRY/BLK

690

Courtesy Lamp Relay Output (Coil)

A4

LT GRN

1391

Power Door Lock Relay Control - LF

A5

WHT

1080

Park Lamp Relay Output (Coil)

A6

--

--

Not Used

A7

DK GRN/WHT

1317

Fog Lamp Relay Output (Coil)

A8

DK GRN

1655

Perimeter Lighting Relay Output

A9 -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

LT BLU

1059

Steering Wheel Position Sensor Signal

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

PNK/BLK

1303

Liftgate Ajar Switch Signal

B11

DK BLU/WHT

727

Door Latch Switch Signal

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 - (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