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
Table 5: Data Link Connector (DLC)
Table 6: Splice Pack SP205
Table 7: Splice Pack SP208

Body Control Module (BCM) C1


Object Number: 1376257  Size: CH

Connector Part Information

    • OEM: 15393122
    • Service: NS
    • 72-Way F Micro-64 Unsealed (GY)

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

YE

5058

Intrusion Sensor Armed Signal (Export)

3

--

--

Not Used

4

D-GN

5525

Tap Up/Tap Down Enable Signal

5-6

--

--

Not Used

7

L-GN

5724

Ignition Mode Switch Mode Control

8-11

--

--

Not Used

12

BK/WH

851

Signal Ground

13

TN

28

Horn Relay Control

14

D-BU

5719

Ignition Mode Switch Start LED Signal

15

WH

5741

Steering Column Lock Module Lock Enable Relay Control (Export)

16

L-BU

1344

Trunk Release Control Signal

17

L-BU

187

Rear Fog Lamp Switch Signal (Export)

18

OG/BK

744

Trunk Ajar Switch Signal

19

D-GN/WH

1317

Fog Lamp Relay Control

20-21

--

--

Not Used

22

YE

43

Accessory Voltage

23-28

--

--

Not Used

29

TN/WH

1969

Headlamp High Beam Relay Control

30-32

--

--

Not Used

33

PK

94

Windshield Washer Switch Signal

34

--

--

Not Used

35

TN

305

Trunk Key Switch Signal

36-37

--

--

Not Used

38

L-BU/WH

1314

Left Front Turn Signal Lamp Supply Voltage

39-41

--

--

Not Used

42

L-GN/BK

1605

Park Brake Relay Control 1

43

--

--

Not Used

44

TN

126

Left Front Door Open Switch Signal

45-46

--

--

Not Used

47

PU

5357

Right Park Lamp Outage Detection Signal

48

--

--

Not Used

49

PU

5059

Intrusion Sensor Alarm On Signal (Export)

50

--

--

Not Used

51

GY/BK

745

Left Front Door Ajar Switch Signal

52

--

--

Not Used

53

TN/WH

746

Right Front Door Ajar Switch Signal

54

--

--

Not Used

55

L-GN

1037

BCM Class 2 Serial Data

56

D-BU/WH

1315

Right Front Turn Signal Lamp Supply Voltage

57

WH

2282

Headlamp Washer Relay Control

58

D-GN

1399

RAP Relay Coil Supply Voltage

59

--

--

Not Used

60

L-GN

1845

Chime Control

61

--

--

Not Used

62

YE

5356

Left Park Lamp Outage Detection Signal

63

L-GN

1177

Right Front Door Open Switch Signal

64

GY

91

Windshield Wiper Motor Relay Coil Supply Voltage

65

WH

1080

Park Lamp Relay Control

66

L-GN/WH

5723

Ignition Mode Switch Mode Voltage

67

--

--

Not Used

68

TN/BK

5168

Power Sounder Enable Signal (Export)

69

PK/BK

109

Hood Ajar Switch Signal (Export)

70

--

--

Not Used

71

BN/WH

2091

Trunk Release Switch Supply Voltage

72

--

--

Not Used

Body Control Module (BCM) C2


Object Number: 1376254  Size: CH

Connector Part Information

    • OEM: 15393121
    • Service: NS
    • 72-Way F Micro-64 Unsealed(GY)

Pin

Wire Color

Circuit No.

Function

1

TN/BK

2500

High Speed GMLAN Serial Data (+) 1

2

TN/BK

2500

High Speed GMLAN Serial Data (+) 1

3

PK/WH

1970

Headlamp Low Beam Relay Control

4

PU

524

Headlamp Dimmer Switch High Beam Signal

5

BN/WH

301

Park Lamp Switch On Signal

6

YE

1977

Rear Fog Lamp Relay Control (Export)

7

PK

5068

Intrusion Sensor Switch Disable Signal (Export)

8

--

--

Not Used

9

TN

2144

Hazard Switch Signal

10

--

--

Not Used

11

OG

5721

Ignition Mode Switch Off LED Signal

12-13

--

--

Not Used

14

TN

28

Horn Relay Control

15

WH

103

Headlamp Switch On Signal

16

OG

192

Front Fog Lamp Switch Signal

17

L-BU

1872

Park Lamp Switch Off Signal 2

18

GY

5381

Brake Position Sensor 5-Volt Reference

19

TN

2501

High Speed GMLAN Serial Data (-) 1

20

TN

2501

High Speed GMLAN Serial Data (-) 1

21-30

--

--

Not Used

31

TN

5380

Brake Position Sensor Signal

32-48

--

--

Not Used

49

PK

1607

Park Brake Relay Control 2

50

--

--

Not Used

51

BN

1356

Flash To Pass Switch Signal

52-56

--

--

Not Used

57

D-GN

5737

Adaptive Cruise Control Gap Up/Down Switch Signal

58

--

--

Not Used

59

BN

5382

Brake Position Sensor Low Reference

60

--

--

Not Used

61

GY

1884

Cruise Control Set/Coast/Resume/Accelerate Switch Signal

62-65

--

--

Not Used

66

L-BU/WH

1414

Left Front Turn Signal Switch Signal

67

D-BU/WH

1415

Right Front Turn Signal Switch Signal

68

BN/WH

1571

Traction Control Switch Signal 2

69

D-GN/WH

1932

Shift Select Switch Park Signal

70

--

--

Not Used

71

L-GN

5720

Ignition Mode Switch Accessory LED Signal

72

--

--

Not Used

Body Control Module (BCM) C3


Object Number: 1362564  Size: CH

Connector Part Information

    • OEM: 15404825
    • Service:
    • 41-Way F (RD)

Pin

Wire Color

Circuit No.

Function

A1

TN

694

Driver Door Lock Actuator Unlock Control

A2

--

--

Not Used

A3

OG

1732

Electronic Control Unit 12-Volt Reference 3

A4

TN

294

Door Lock Actuator Unlock Control

A5

--

--

Not Used

A6

RD/WH

740

Battery Positive Voltage

A7

RD/WH

240

Battery Positive Voltage

A8

RD/WH

1040

Battery Positive Voltage

A9

YE

18

Left Rear Stop/Turn Lamp Supply Voltage (Except Europe and Japan)

Left Rear Turn Lamp Supply Voltage (Europe and Japan)

A10

BN/WH

156

Courtesy Lamp Switch Signal

A11

--

--

Not Used

A12

D-GN

19

Right Rear Stop/Turn Lamp Supply Voltage (Except Europe and Japan)

Right Rear Turn Lamp Supply Voltage (Europe and Japan)

B1-B2

--

--

Not Used

B3

RD/WH

1240

Battery Positive Voltage (Export)

B4

--

--

Not Used

B5

PK

3

Run/Crank Ignition 1 Voltage

B6-B11

--

--

Not Used

B12

PK

5722

Ignition Mode Switch LED Supply Voltage

C1 - C2

--

--

Not Used

C3

PK

1139

Ignition 1 Voltage

PK

1139

Ignition 1 Voltage

C4

--

--

Not Used

C5

PK

839

Ignition 1 Voltage

C8-C12

--

--

Not Used

D1

RD/BK

242

Battery Positive Voltage

D2

--

--

Not Used

D3

PK

1139

Ignition 1 Voltage

PK

1139

Ignition 1 Voltage

D4

RD/WH

1340

Battery Positive Voltage

RD/WH

1340

Battery Positive Voltage

D5

--

--

Not Used

D6

RD/BK

242

Battery Positive Voltage

D7

RD/WH

840

Battery Positive Voltage

D8

--

--

Not Used

D9

L-GN

24

Backup Lamp Supply Voltage

L-GN

24

Backup Lamp Supply Voltage

D10

RD/WH

640

Battery Positive Voltage

D11

RD/WH

540

Battery Positive Voltage

D12

RD/WH

1740

Battery Positive Voltage

Body Control Module (BCM) C4


Object Number: 697044  Size: CH

Connector Part Information

    • OEM: 15356603
    • Service:
    • 68-Way F Metri-Pack 280 Series, Flexlock (GY)

Pin

Wire Color

Circuit No.

Function

A1

--

--

Not Used

A2

WH

156

Courtesy Lamp Switch Signal

WH

156

Courtesy Lamp Switch Signal

A3

BK/L-GN

24

Backup Lamp Supply Voltage

A4-A12

--

--

Not Used

B1-B9

--

--

Not Used

B10

PK

1439

Ignition 1 Voltage

B11-B12

--

--

Not Used

C1

RD/WH

140

Battery Positive Voltage

RD/WH

140

Battery Positive Voltage

C2-C3

--

--

Not Used

C4

WH

17

Stop Lamp Switch Signal

C5

--

--

Not Used

C8

PK

3

Run/Crank Ignition 1 Voltage

C9

--

--

Not Used

C10

PK

739

Ignition 1 Voltage

PK

739

Ignition 1 Voltage

C11-C12

--

--

Not Used

D1

RD/WH

340

Battery Positive Voltage

RD/WH

340

Battery Positive Voltage

D2

--

--

Not Used

D3

PK

3

Run/Crank Ignition 1 Voltage

D4

L-BU

20

Stop Lamp Supply Voltage

D5

OG

1732

Courtesy Lamp Supply Voltage

OG

1732

Courtesy Lamp Supply Voltage

D6 - D7

--

--

Not Used

D8

PK

639

Ignition 1 Voltage

D9

--

--

Not Used

D10

RD/WH

1140

Battery Positive Voltage

RD/WH

1140

Battery Positive Voltage

D11-D12

--

--

Not Used

E1

RD/WH

440

Battery Positive Voltage

E2-E4

--

--

Not Used

E5

OG

1732

Electronic Control Unit 12-Volt Reference (3)

E6

RD/WH

740

Battery Positive Voltage

RD/WH

740

Battery Positive Voltage

E7

--

--

Not Used

E8

PK

1039

Ignition 1 Voltage

E9

--

--

Not Used

E10

RD/WH

1240

Battery Positive Voltage

E11

--

--

Not Used

E12

BK

1550

Ground

F1

RD/WH

240

Battery Positive Voltage

RD/WH

240

Battery Positive Voltage (Export)

F2-F4

--

--

Not Used

F5

RD/WH

1040

Battery Positive Voltage (Export)

F6-F8

--

--

Not Used

F9

RD/WH

3140

Battery Positive Voltage (Export)

F10-F12

--

--

Not Used

Data Link Connector (DLC)


Object Number: 68793  Size: CH

Connector Part Information

    • OEM: 12110250
    • Service: NS
    • 16-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

PU

1132

DLC Class 2 Serial Data

3

--

--

Not Used

4

BK

1450

Ground

5

BK/WH

851

Ground

6

TN/BK

2500

High Speed GMLAN Serial Data Bus +

7-13

--

--

Not Used

14

TN

2501

High Speed GMLAN Serial Data Bus -

15

--

--

Not Used

16

RD/WH

1040

Battery Positive Voltage

Splice Pack SP205


Object Number: 338576  Size: CH

Connector Part Information

    • OEM: 15317802
    • Service: 15305914
    • 12-Way F Metri-Pack 150 Series (GY)

Pin

Wire Color

Circuit No.

Function

A

PU

1132

DLC Class 2 Serial Data

B

YE

1127

Trip Computer/Nav Class 2 Serial Data (HUD)

C

GY

1036

IPC Class 2 Serial Data

D

PU

1132

DLC Class 2 Serial Data

E

BN

1046

DDM Class 2 Serial Data

F

D-BU

1128

SDM Class 2 Serial Data

G

BN/WH

1048

SCM (Seat) Class 2 Serial Data (Memory Seats)

H

OG

5739

Class 2 Serial Data (Export)

M

--

--

Not Used

K

L-BU

5781

Class 2 Serial Data (Digital Radio)

L-M

--

--

Not Used

Splice Pack SP208


Object Number: 338576  Size: CH

Connector Part Information

    • OEM: 15317802
    • Service: 15305914
    • 12-Way F Metri-Pack 150 Series (GY)

Pin

Wire Color

Circuit No.

Function

A

PU

1132

DLC Class 2 Serial Data

B

WH

1038

HVAC Class 2 Serial Data

C

OG

1044

Radio Class 2 Serial Data

D

PK

1045

RFA Class 2 Serial Data

E

--

--

Not Used

F

L-GN

1037

BCM Class 2 Serial Data

G

TN

1047

PDM Class 2 Serial Data

H

L-GN

2271

ADG Class 2 Serial Data (Onstar)

J-K

--

--

Not Used

L

PU

5513

Class 2 Serial Data

M

--

--

Not Used