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: 362758  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A1-A2

--

--

Not Used

A3

WHT

194

Door Unlock Control

A4

LT BLU

195

Door Lock Control

A5

BLK/WHT

56

Trunk Release Motor-Control or Supply Voltage

A6

TAN

694

Driver Door Lock Actuator Unlock

A7

LT GRN/BLK

394

Driver Door Jamb Switch Signal

A8

LT BLU

395

Passenger Door Jamb Switch Signal

B1-B7

--

--

Not Used

B8

PPL

1807

Class 2 Serial Data

Body Control Module (BCM) C2


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

BRN

9

Park Lamp Supply Voltage

A2

--

--

Not Used

A3

YEL

43

Accessory Voltage

A4

ORN/BLK

737

Rear Compartment Lamp Control

A5

BRN/WHT

230

Instrument Panel Lamps Dimming Control

A6

PNK

1200

Headlamp High Beam Signal

A7

YEL

1836

Security System Sensor Signal

A8-A9

--

--

Not Used

A10

ORN

1732

Courtesy Lamps Supply Voltage

A11

ORN

1440

Battery Positive Voltage

A12

ORN

340

Battery Positive Voltage

B1

BLK/WHT

451

Ground

B2

LT BLU

1134

Park Brake Switch Signal

B3

--

--

Not Used

B4

BLK/WHT

1576

Trunk Release Switch Signal

B5

--

--

Not Used

B6

DK BLU

1201

Headlamp Low Beam Signal

B7

PPL

1807

Class 2 Serial Data

B8

PPL

1807

Class 2 Serial Data

B9

PPL

1807

Class 2 Serial Data

B10

ORN

1940

Battery Positive Voltage

B11

BLK/WHT

251

Ground

B12

--

--

Not Used

Body Control Module (BCM) C3


Object Number: 255037  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A1

WHT

156

Courtesy Lamp Low Control

A2

GRY

8

Instrument Panel Lamp Supply Voltage

A3

--

--

Not Used

A4

LT GRN/BLK

592

DRL Relay Control

A5

BRN

323

Shift Lock Actuator Feed

A6-A8

--

--

Not Used

A9

BRN/WHT

1571

Traction Control Switch Signal (Pontiac Only)

A10

LT GRN

66

A/C Request Signal

A11

ORN

192

Front Fog Lamp Switch Signal

A12

PNK

39

Ignition 1 Voltage

B1

PPL

719

Low Reference

B2

BLK/WHT

151

Ground

B3

BLK

1835

Security System Sensor Low Reference

B4

--

--

Not Used

B5

DK GRN/WHT

1317

Fog Lamp Relay Control

B6

--

--

Not Used

B7

BLK

28

Horn Relay Control

B8

YEL/BLK

68

Low Coolant Level Indicator Control

B9

GRY

728

Security Indicator Control

B10

WHT

1459

Security System Sensor Supply Voltage

B11

PNK

849

Brake Fluid Level Sensor Signal

B12

LT GRN

80

Key In Ignition Switch Signal