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: 130689  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A1-A2

--

--

Not Used

A3

WHT/BLK

1073

Ignition Key Resistor Signal

A4

ORN

1640

Battery Positive Voltage

A5

--

--

Not Used

A6

WHT

352

ALC HDLP Relay Control

A7

YEL/BLK

1138

DRL Ambient Light Sensor Low Reference

A8

--

--

Not Used

A9

BLK/WHT

851

Ground

A10

LT GRN/BLK

1137

DRL Ambient Light Sensor Signal

A11

--

--

Not Used

A12

DK BLU

1393

Courtesy Lamp Relay Control

B1

--

--

Not Used

B2

PPL/WHT

1074

Ignition Key Resistor Low Reference

B3

GRY

1901

Rear Fog Lamp Relay Control - Export

B4

DK GRN/WHT

1317

Fog Lamp Relay Control

B5

--

--

Not Used

B6

LT GRN

1037

BCM Class 2 Serial Data

B7-B8

--

--

Not Used

B9

LT BLU

1344

Trunk Release Relay Control

B10

BLK

28

Horn Relay Control

B11

--

--

Not Used

B12

GRY

2169

Convertible Top Relay Cover Release Control

Body Control Module(BCM) C2


Object Number: 333019  Size: CH

Connector Part Information

    • 12110245
    • 32-Way F Micro-Pack 100 Series (PNK)

Pin

Wire Color

Circuit No.

Function

C1

DK BLU

38

Backup Lamp Relay Control

C2

GRY/BLK

745

Left Front Door Ajar Switch Signal

C3

WHT

193

Rear Defog Relay Control

C4

ORN

640

Battery Positive Voltage

C5

--

--

Not Used

C6

TAN

159

Key Out Ignition Switch Signal

C7-C8

--

--

Not Used

C9

PNK/BLK

109

Hood Ajar Switch Signal

C9

DK BLU

2167

Convertible Top Cover Ajar Switch Supply Voltage

C10

PPL

681

Secondary Rear Defog Switch Signal

C11

LT GRN

2166

Convertible Top Cover Release Switch Supply Voltage

C12

RED/BLK

744

Trunk Ajar Switch Signal

C13

DK BLU

2167

Convertible Top Cover Ajar Switch Supply Voltage

C14

LT GRN/BLK

80

Key In Ignition Switch Signal

C15

LT GRN

1601

Steering Column Lock Signal

C16

--

--

Not Used

D1

BLK/WHT

746

Right Front Door Ajar Switch Signal

D2-D3

--

--

Not Used

D4

ORN/BLK

192

Fog Lamp Switch Output - FRT

D5

LT BLU

187

Rear Fog Lamp Switch Signal (Export)

D6

--

--

Not Used

D7

DK BLU

15

Right Turn Signal Status Signal

D8

LT BLU

14

Left Turn Signal Status Signal

D9

BLK

1576

Trunk Release Switch Signal

D10

--

--

Not Used

D11

DK GRN

306

Headlamp Switch Headlamps Off Signal

D12

YEL

243

Accessory Voltage

D13

PNK

1039

Ignition 1 Voltage

D14

DK GRN

2629

Steering Column Lock Relay Control

D15

BRN/WHT

1571

Traction Control Switch Signal

D16

LT GRN

1966

Right Front Turn Signal Relay Control

Body Control Module (BCM) C3


Object Number: 73152  Size: CH

Connector Part Information

    • 12110259
    • 16-Way F Micro-Pack 100 Series (GRN)

Pin

Wire Color

Circuit No.

Function

A1

--

--

Not Used

A2

BLK

150

Ground

A3

GRY/BLK

690

Courtesy Lamp Low Control

A4

ORN

2540

Not Used

A5

YEL/BLK

1784

Twilight Sentinel Enable Signal

A6

PPL

1604

Steering Column Unlock

A7

ORN/BLK

1976

Left Front Turn Signal Relay Control

A8

ORN

1603

Steering Column Lock

B1

BRN/WHT

1244

Instrument Panel Lamp Supply Voltage - 2

B2

YEL

390

Instrument Panel Lamp Supply Voltage - 3

B3

--

--

Not Used

B4

YEL

183

Front Fog Lamp Indicator Control

B5

--

--

Not Used

B6

GRY

8

Instrument Panel Lamp Supply Voltage -- 1

B7

YEL/BLK

625

Starter Enable Relay Control

B8

TAN

159

Key Out Ignition Switch Signal