GM Service Manual Online
For 1990-2009 cars only
Table 1: Body Control Module (BCM), C1
Table 2: Body Control Module (BCM), C2
Table 3: Body Control Module (BCM), C3

Body Control Module (BCM), C1


Object Number: 73152  Size: CH

Connector Part Information

    • 12084945
    • 16-Way F Micro-Pack 100 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A1

PNK/WHT

1970

Headlamp Low Beam Relay Control

A2

DK GRN/WHT

1317

Fog Lamp Relay Control

A3

GRY/BLK

308

Park Lamp Switch On Input

A4

BLK

28

Horn Relay Control

A5

--

--

Not Used

A6

YEL

1977

Rear Fog Lamp Relay Control

A7

--

--

Not Used

A8

PPL

1600

Ignition 0 Voltage

B1

WHT

1080

Park Lamp Relay Control

B2

--

--

Not Used

B3

LT BLU

1344

Trunk Release Relay Control

B4

--

--

Not Used

B5

LT GRN/BLK

592

DRL Relay Control

B6

--

--

Not Used

B7

LT GRN/BLK

394

Left Front Door Handle Switch Signal

B8

BRN

341

Ignition 3 Voltage

Body Control Module (BCM), C2


Object Number: 73156  Size: CH

Connector Part Information

    • 12110088
    • 24-Way F Micro-Pack 100 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A1

--

--

Not Used

A2

WHT

682

Door Lock Lock/Unlock Signal

A3

YEL/BLK

1138

DRL Ambient Light Sensor Low Reference

A4

--

--

Not Used

A5

PNK

1200

Headlamp High Beam Signal

A6

BLK

1835

Security System Sensor Low Reference

A7

BLK

1576

Trunk Release Switch Signal

A8

LT GRN

696

Cruise Control Cancel Signal (Oldsmobile Only)

A9

LT BLU

1134

Park Brake Switch Signal

A10-A11

--

--

Not Used

A12

PNK/BLK

1379

Oil Change Reset Switch Signal

B1

ORN

1732

Courtesy Lamps Supply Voltage

B2

LT GRN/BLK

1137

DRL Ambient Light Sensor Signal

B3

--

--

Not Used

B4

DK BLU

1201

Low Beam Input

B5

--

--

Not Used

B6

YEL

1836

Security System Sensor Signal

B7

LT BLU

187

Rear Fog Lamp Switch Signal

B8

BRN

9

Park Lamp Supply Voltage

B9

PNK

439

Ignition 1 Voltage

B10

LT BLU

395

Right Front Door Handle Switch Signal

B11

BLK/WHT

238

Seat Belt Switch - Left

B12

LT GRN

80

Key In Ignition Switch Signal

Body Control Module (BCM), C3


Object Number: 130689  Size: CH

Connector Part Information

    • 12110244
    • 24-Way F Micro-Pack 100 Series (PNK)

Pin

Wire Color

Circuit No.

Function

A1

--

--

Not Used

A2

YEL

356

Driver Door Lock Relay Unlock

A3

--

--

Not Used

A4

ORN

192

Front Fog Lamp Switch Signal

A5

BRN/WHT

1571

Traction Control Switch Signal

A6

BLK/WHT

99

Windshield Washer Fluid Level Signal

A7

--

--

Not Used

A8

LT BLU

195

Door Lock Control

A9

--

--

Not Used

A10

BLK/WHT

151

Ground

A11

WHT

156

Courtesy Lamp Low Control

A12

ORN

340

Battery Positive Voltage

B1

ORN

1540

Battery Positive Voltage

B2

PPL

1807

Class 2 Serial Data (Primary)

B3

WHT

194

Door Unlock Control

B4

WHT

1459

Security System Sensor Supply Voltage

B5

--

--

Not Used

B6

YEL/BLK

68

Low Coolant Level Indicator Control

B7

LT GRN

66

A/C Request Signal

B8-B12

--

--

Not Used