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

ALC 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

Fused Output, Ignition 0

B1

WHT

1080

ALC Park Lamp Relay Output-Coil

B2

--

--

Not Used

B3

LT BLU

1344

Trunk Relay Output-Coil

B4

--

--

Not Used

B5

LT GRN/BLK

592

DRL Relay Output-Coil

B6

--

--

Not Used

B7

LT GRN/BLK

394

Door Handle Switch Signal, Left Front

B8

BRN

341

Fused Output, Ignition 3

Body Control Module (BCM) C2


Object Number: 73156  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A1

--

--

Not Used

A2

WHT

682

Door Lock/Unlock Switch Signal

A3

YEL/BLK

1138

Ambient Light Sensor Signal Return

A4

--

--

Not Used

A5

PNK

1200

High Beam Input

A6

BLK

1835

Passlock™ Signal Return

A7

BLK

1576

Trunk Release Switch Input

A8

LT GRN

696

Cruise Cancel Switch Input (Oldsmobile Only)

A9

LT BLU

1134

Park Brake Switch Signal

A10-A11

--

--

Not Used

A12

PNK/BLK

1379

Oil Change/TIMS Reset Switch Signal

B1

ORN

1732

Inadvertent Power Control Output

B2

LT GRN/BLK

1137

Ambient Light Sensor Signal

B3

--

--

Not Used

B4

DK BLU

1201

Low Beam Input

B5

--

--

Not Used

B6

YEL

1836

Passlock™ Signal

B7

--

--

Not Used

B8

BRN

9

Parklamp Input

B9

PNK

439

Fused Output, Ignition 1

B10

LT BLU

395

Door Handle Switch Signal, Right Front (2 door) and Rear Passenger Door Jamb Switch Signal (4 door)

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

Driver Door Unlock Relay Feed-Coil

A3

LT GRN

377

Remote Control Door Lock Receiver Serial Data Signal

A4

ORN

192

Fog Lamp Switch Input

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

All Door Lock Relay Feed Coil

A9

--

--

Not Used

A10

BLK/WHT

151

Ground

A11

WHT

156

Interior Lamp Control

A12

ORN

340

Fused Output, Battery

B1

ORN

1540

Fused Output, Battery

B2

PPL

1807

Serial Data Signal, Class 2

B3

WHT

194

Power Door Unlock Relay Feed Coil

B4

WHT

1459

Passlock™ Power 12 volt Reference

B5

--

--

Not Used

B6

YEL/BLK

68

Low Coolant Level Switch Input

B7

LT GRN

66

A/C Switch Input

B8-B12

--

--

Not Used