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

Low Beam Headlamp Relay Output-Coil

A2

DK GRN/WHT

1317

Fog Lamp Relay Output-Coil

A3

--

--

Not Used

A4

BLK

28

Horn Relay Output-Coil

A5-A7

--

--

Not Used

A8

PPL

1600

Fuse Output, ACCY, RUN, CRANK

B1

WHT

1080

Park Lamp Relay Output-Coil

B2

--

--

Not Used

B3

LT BLU

1344

Trunk Relay Output-Coil

B4

--

--

Not Used

B5

LT GRN/BLK

592

Daytime Running Lamp (DRL) Relay Output-Coil

B6

--

--

Not Used

B7

LT GRN/BLK

394

Door Handle Switch Signal, Left Front

B8

BRN

341

Fuse Output, Ignition 3

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/Unlock Switch

A3

YEL/BLK

1138

Daytime Running Lamp Photocell Return

A4

--

--

Not Used

A5

PNK

1200

Headlamp Lamp Output (High Beam)

A6

BLK

1835

Magnetic Rotation Detection Sensor Return

A7

BLK

1576

Trunk Release Switch Output

A8

LT GRN

696

Cruise Cancel Switch (Olds)

A9

LT BLU

1134

Park Brake Switch Signal

A10-A11

--

--

Not Used

A12

PNK/BLK

1379

Oil Change Reset Switch Signal

B1

ORN

1732

Electronic Control Unit Output 12 Volt (Inadvertent Load Control)

B2

LT GRN/BLK

1137

Daytime Running Lamp Photocell Signal

B3

--

--

Not Used

B4

DK BLU

1201

Headlamp Lamp Output (Low Beam)

B5

--

--

Not Used

B6

YEL

1836

Magnetic Rotation Detection Sensor Signal

B7

--

--

Not Used

B8

BRN

9

Parklamp Feed

B9

PNK

439

Fuse Output, Ignition 1

B10

LT BLU

395

Door Handle Switch Signal, Right Front

B11

BLK/WHT

238

Seat Belt Switch Signal

B12

LT GRN

80

Key Reminder 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

Power Door Lock Relay Feed-Coil (Driver Door Unlock)

A3

--

--

Not Used

A4

ORN

192

Fog Lamp Switch Output

A5

BRN/WHT

1571

Traction Control System Switch Signal

A6

BLK/WHT

99

Windshield Washer Fluid Level Sensor Signal

A7

--

--

Not Used

A8

LT BLU

195

Power Door Lock Relay Feed-Lock Coil

A9

--

--

Not Used

A10

BLK/WHT

151

Ground-Clean

A11

WHT

156

Courtesy Lamp Output

A12

ORN

340

Fuse Output, Battery

B1

ORN

1540

Fuse Output, Battery

B2

PPL

1807

Serial Data Signal, Class B, 10400 Baud (Primary)

B3

WHT

194

Power Door Lock Relay Feed-Unlock Coil

B4

WHT

1459

Magnetic Rotation Detection Ignition Key Cylinder Sensor Feed 12 Volt Reference

B5

--

--

Not Used

B6

YEL/BLK

68

Low Coolant Level Indicator Lamp Output

B7

LT GRN

66

A/C Switch Output

B8-B12

--

--

Not Used