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
Table 4: Body Control Module (BCM) C4

Body Control Module (BCM) C1


Object Number: 803688  Size: CH

Connector Part Information

    • 12064871
    • 10-Way F Metri-Pack 150 Series (BLU)

Pin

Wire Color

Circuit No.

Function

A

WHT

156

Courtesy Lamp Low Control

B-D

--

--

Not Used

E

LT BLU

14

Left Turn Signal Lamps Supply Voltage

F

DK BLU

15

Right Turn Signal Lamps Supply Voltage

G

LT BLU/WHT

1414

Left Turn Signal Switch Signal

H

DK BLU/WHT

1415

Right Turn Signal Switch Signal

J

PNK

439

Ignition 1 Voltage

K

BLK/WHT

1750

Ground

Body Control Module (BCM) C2


Object Number: 362758  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A1

LT GRN

80

Key In Ignition Switch Signal

A2

LT BLU

1830

DRL Park Brake ON Signal

A3

LT GRN

1055

Low Tire Pressure Reset Switch Signal

A4

--

--

Not Used

A5

DK BLU

/WHT

727

Right Front Door Open Switch Signal

A6

ORN/BLK

781

Driver Door Lock Switch Unlock Signal

A7

WHT

1756

Rear Compartment Lid Release Switch Signal

A8

LT GRN

1037

BCM Class 2 Serial Data

B1

YEL/BLK

1138

DRL Ambient Light Sensor Signal

B2

LT GRN/BLK

1137

DRL Ambient Light Sensor Low Reference

B3

WHT/BLK

1073

Ignition Key Resistor Signal

B4

PPL/WHT

1074

Ignition Key Resistor Low Reference

B5

DK BLU

49

Driver Door Ajar Switch Signal

B6

RED/BLK

780

Driver Door Lock Switch Lock Signal

B7

DK BLU

/WHT

1495

Courtesy Lamp Control

B8

--

--

Not Used

Body Control Module (BCM) C3


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

LT GRN

377

Serial Data

A2

LT BLU

1872

Headlamp Switch OFF Signal

A3

--

--

Not Used

A4

GRY/BLK

308

Park Lamp Switch Signal On Input

A5

BLK

28

Horn Relay Control

A6

ORN

192

Fog Lamps Enable

A6-A7

--

--

Not Used

A8

DK BLU

38

Backup Lamp Relay Control - Regal

A8

--

--

Not Used

A9

BRN

253

Trunk Release Relay Control

A10

BLK

707

RAP Relay Control (KP2)

A10

--

--

Not Used

A11

WHT

103

Headlamp Switch Headlamps ON Signal

A12

--

--

Not Used

B1-B3

--

--

Not Used

B4

GRY

2537

Trunk Ajar Switch Signal (w/Entrapment Protection, w/o Entrapment Protection w/Jumper)

B4

ORN/BLK

737

Rear Compartment Lamp Control (w/o Entrapment Protection w/o Jumper)

B5

YEL

10

Headlamp Switch Signal

B6

BRN/WHT

1571

Traction Control Switch Signal - Regal

B7

--

--

Not Used

B8

YEL

443

Accessory Voltage

B9

PPL

806

Crank Voltage

B10

PPL

1500

Ignition 0 Voltage

B11

BLK/WHT

238

Seat Belt Switch - Left

B12

--

--

Not Used

Body Control Module (BCM) C4


Object Number: 62464  Size: CH

Connector Part Information

    • 12064769
    • 10-Way F Metri-Pack 150 Series (NAT)

Pin

Wire Color

Circuit No.

Function

A

BLK

1750

Ground

B

BLK

1550

Ground

C

--

--

Not Used

D

ORN

2340

Battery Positive Voltage

E

TAN

694

Driver Door Lock Actuator Unlock Control

F

ORN

1732

Courtesy Lamps Supply Voltage

G

GRY

295

Door Lock Actuator Lock Control

H

TAN

294

Door Lock Actuator Unlock Control

J

ORN

1540

Battery Positive Voltage

K

ORN

240

Battery Positive Voltage