GM Service Manual Online
For 1990-2009 cars only
Connector 1: Body Control Module (BCM) C1
Connector 2: Body Control Module (BCM) C2
Connector 3: Body Control Module (BCM) C3
Connector 4: Body Control Module (BCM) C4
Connector 5: Body Control Module (BCM) C5
Connector 6: Data Link Connector (DLC)
Connector 7: SP201
Connector 8: SP300

Body Control Module (BCM) C1


Object Number: 40446  Size: CH

Connector Part Information

  • OEM: 12177194
  • Service: 15305927
  • Description: 6-Way F Metri-Pack 150 Series (WH)

Body Control Module (BCM) C1

Pin

Wire Color

Circuit No.

Function

A

BN/WH

230

Instrument Panel Lamps Dimming Control

B

--

--

Not Used

C

OG

4040

Battery Positive Voltage

D

OG

1732

Inadvertent Courtesy Lamps Supply Voltage

E

BN/WH

230

Instrument Panel Lamps Dimming Control

F

OG

2240

Battery Positive Voltage

Body Control Module (BCM) C2


Object Number: 73156  Size: CH

Connector Part Information

  • OEM: 12110088
  • Service: See Catalog
  • Description: 24-Way F Micro-Pack 100 Series (L-GY)

Body Control Module (BCM) C2

Pin

Wire Color

Circuit No.

Function

A1

--

--

Not Used

A2

WH

2283

12-Volt Reference

A3

TN/BK

254

Power Door Unlock Fuse Supply Voltage

A4

RD/WH

1970

Headlamp Low Beam Relay Control

A5

D-GN/WH

1317

Fog Lamp Relay Control

A6

GY/BK

255

Power Door Lock Fuse Supply Voltage

A7

L-GN

1391

Driver Door Unlock Relay Control

A8-A10

--

--

Not Used

A11

RD/WH

812

12-Volt Reference

A12

OG

1140

Battery Positive Voltage

B1

BK/WH

1969

Headlamp High Beam Relay Control

B2

WH

1080

Park Lamp Relay Control

B3

--

--

Not Used

B4

L-GN/BK

592

DRL Relay Control

B5

--

--

Not Used

B6

BK/WH

751

Ground

B7

BK

1835

Security System Sensor Low Reference

B8

--

--

Not Used

B9

BK

28

Horn Relay Control

B10

--

--

Not Used

B11

GY

705

5-Volt Reference

B12

L-GN

1037

BCM Class 2 Serial Data

Body Control Module (BCM) C3


Object Number: 255037  Size: CH

Connector Part Information

  • OEM: 7199-1569-80
  • Service: 12160778
  • Description: 24-Way F Micro-Pack 100 Series (BN)

Body Control Module (BCM) C3

Pin

Wire Color

Circuit No.

Function

A1-A3

--

--

Not Used

A4

WH

278

Ambient Light Sensor Signal

A5

--

--

Not Used

A6

YE

1836

Security System Sensor Signal

A7

L-GN

1011

Remote Radio Control Signal

A8

L-BU

1134

Park Brake Switch Signal

A9

OG

192

Front Fog Lamp Switch Signal

A10

D-GN

113

Windshield Wiper Switch Signal 2

A11-A12

--

--

Not Used

B1

YE

710

Class 2 Serial Data

B2

GY/BK

308

Park Lamp Switch On Signal

B3-B5

--

--

Not Used

B6

BK/WH

751

Ground

B7

--

--

Not Used

B8

OG/BK

2090

Instrument Panel Lamps Dimming Control

B9

L-GN

11

Headlamp Dimmer Switch Signal

B10-B12

--

--

Not Used

Body Control Module (BCM) C4


Object Number: 130690  Size: CH

Connector Part Information

  • OEM: 7123-9840-90
  • Service: 12110206
  • Description: 24-Way F Micro-Pack 100 Series (L-BU)

Body Control Module (BCM) C4

Pin

Wire Color

Circuit No.

Function

A1

L-GN

80

Key In Ignition Switch Signal

A2

YE

307

Headlamp Switch Flash To Pass Signal

A3

RD

1390

Ignition 0 Voltage

A4

RD

39

Ignition 1 Voltage

A5

BK/WH

746

Right Front Door Ajar Switch Signal

A6

Not Used

A7

L-BU

1134

Park Brake Switch Signal

A8-A11

--

--

Not Used

A12

WH

103

Headlamp Switch Headlamps On Signal

B1-B2

--

--

Not Used

B3

YE

343

Accessory Voltage

B4

GY/BK

745

Left Front Door Ajar Switch Signal

B5

L-BU

195

Door Lock Control

B6

GY/BK

2226

Instrument Panel Lamps Dimmer Switch Low Reference

B7

BK

279

Ambient Light Sensor Low Reference

B8-B9

--

--

Not Used

B10

WH

194

Door Unlock Control

B11-B12

--

--

Not Used

Body Control Module (BCM) C5


Object Number: 304345  Size: CH

Connector Part Information

  • OEM: 12177195
  • Service: 15305931
  • Description: 6-Way F Metri-Pack 150 Series (BK)

Body Control Module (BCM) C5

Pin

Wire Color

Circuit No.

Function

A-C

--

--

Not Used

D

OG

2140

Battery Positive Voltage

E

GY/BK

690

Courtesy Lamp Supply Voltage

F

L-GN

24

Backup Lamp Supply Voltage

Data Link Connector (DLC)


Object Number: 68793  Size: CH

Connector Part Information

  • OEM: 12110250
  • Service: Not Serviced
  • Description: 16-Way F Metri-Pack 150 Series (BK)

Data Link Connector (DLC)

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

PU

1132

DLC Class 2 Serial Data

3

--

--

Not Used

4

BK

2250

Ground

5

BK/WH

751

Ground

6

TN/WH

2500

High Speed GMLAN Serial Data Bus (+) (M12)

TN/WH

2500

(M32) High Speed GMLAN Serial Data Bus (+)(M12)

7-13

--

--

Not Used

14

TN

2501

High Speed GMLAN Serial Data Bus (-)

TN

2501

(M32) High Speed GMLAN Serial Data Bus (-)

15

--

--

Not Used

16

OG

640

Battery Positive Voltage

SP201


Object Number: 338576  Size: CH

Connector Part Information

  • OEM: 12191216
  • Service: 15305914
  • Description: 12-Way F Metri-Pack 280 Series Splice Saver (GY) Indexing May Vary

SP201

Pin

Wire Color

Circuit No.

Function

A

PU

1132

DLC Class 2 Serial Data

PU

1132

DLC Class 2 Serial Data

B

D-GN

1049

PCM Class 2 Serial Data

C-D

--

--

Not Used

E

L-BU

1122

ABS Class 2 Serial Data

F

L-BU

1128

SDM Class 2 Serial Data

L-BU

1128

SDM Class 2 Serial Data

G

GY

1036

IPC Class 2 Serial Data

H

D-BU

2218

Class 2 Serial Data

J

OG

1044

Radio Class 2 Serial Data

K

GY

2289

Class 2 Serial Data

L

BN/WH

1048

SCM (Seat) Class 2 Serial Data

M

L-GN

1037

BCM Class 2 Serial Data

SP300


Object Number: 726823  Size: CH

Connector Part Information

  • OEM: 12191910
  • Service: 12191910
  • Description: 6-Way F Metri-Pack 280 Series Splice Saver (GY) Indexing May Vary

SP300

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

L-BU

2288

Class 2 Serial Data

C-D

--

--

Not Used

E

D-BU

2272

Amplifier Class 2 Serial Data

F

D-BU/WH

2218

Class 2 Serial Data