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: 283791  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

GRY

157

Interior Lamp Ground Output

B-D

--

--

Not Used

E

LT BLU

14

Turn Signal Lamp Feed - Left Front

F

DK BLU

15

Turn Signal Lamp Feed - Right Front

G

LT BLU/WHT

1414

Turn Signal Switch Output - Left Front

H

DK BLU/WHT

1415

Turn Signal Switch Output - Right Front

J

PNK

439

Fuse Output - Ignition 1

K

BLK

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 Input

A2

LT BLU

1830

Park Brake Applied Input

A3-A4

--

--

Not Used

A5

DK BLU/WHT

727

Door Open Input

A6

ORN/BLK

781

Door Unlock Switch Input

A7

LT GRN/BLK

394

Door Handle Switch Input

A8

LT GRN

1037

Serial Data (Class 2)

B1

YEL/BLK

1138

Daytime Running Lamp - 5V Reference

B2

LT GRN/BLK

1137

Daytime Running Lamp Signal - Low

B3

YEL

1836

PASS-Lock Sensor Data Input

B4

BLK

1835

PASS-Lock Sensor Ground

B5

DK BLU

49

Driver Door Open Input

B6

RED/BLK

780

Door Lock Switch Input

B7

DK BLU/WHT

1495

Courtesy Lamps On Input

B8

--

--

Not Used

Body Control Module (BCM) C3


Object Number: 130690  Size: CH

Connector Part Information

    • 12110206
    • 24-Way F Micro-Pack 100 Series (BLU)

Pin

Wire Color

Circuit No.

Function

A1

LT GRN

377

RFA Link

A2

LT BLU

1872

Exterior Lamps OFF Input

A3

--

--

Not Used

A4

WHT

1080

Park Lamp Relay Control

A5

BLK

28

Horn Relay Output - Coil

A6

ORN

192

Fog Lamp Enable Output (w/RPO CJ2 Only)

A6

--

--

Not Used (w/RPO C67)

A7-A9

--

--

Not Used

A10

BLK

707

RAP Control

A11

PNK/WHT

1970

DRL Link

A12-B3

--

--

Not Used

B4

ORN/BLK

737

Trunk Ajar Input

B5

YEL

10

Headlamp Switch Input

B6

YEL

1571

Traction Control Request Input

B7

WHT

1459

PASS-Lock Sensor Power Output

B8

--

--

Not Used

B9

PPL

806

Crank Signal Input

B10

PPL

1500

Ignition 0 Signal Input

B11

BLK/WHT

238

Driver Seat Belt Unfastened Input

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

PCM Power Input

E

TAN

694

Power Door Lock Motor Feed - Driver Door Unlock

F

ORN

1732

Electronic Control Unit Output - 12 Volts - Inadvertant Load Control

G

GRY

295

Power Door Lock Motor Feed - Lock

H

TAN

294

Power Door Lock Motor Feed - Unlock

J

ORN

1540

Fuse Output - Battery

K

ORN

240

Fuse Output - Battery