GM Service Manual Online
For 1990-2009 cars only
Table 1: Powertrain Control Module (PCM) C1
Table 2: Powertrain Control Module (PCM) C2
Table 3: Powertrain Control Module (PCM) C3

Powertrain Control Module (PCM) C1


Object Number: 697008  Size: CH

Connector Part Information

    • 15354782
    • 65-Way F Metri-Pack 280 (BU)

Pin

Wire Color

Circuit No.

Function

1

L-BU

1162

APP Sensor 2 Signal

2

D-BU

1161

APP Sensor 1 Signal

3

L-BU

1320

Stop Lamp Supply Voltage (K34)

4

GY/BK

1694

4WD Low Signal (NP8)

5

GY/BK

87

Cruise Control Resume/Accel Switch Signal (K34)

6

D-BU

84

Cruise Control Set/Coast Switch Signal (K34)

7

BN/WH

419

MIL Control

8

OG/BK

510

Low Reference

9

--

--

Not Used

10

BN

1271

Low Reference

11

PU

1272

Low Reference

12

BK

2759

Low Reference

13

BK

2760

Low Reference

14

BK

2751

Low Reference

15-16

--

--

Not Used

17

GY

397

Cruise Control On Switch Signal (K34)

18

--

--

Not Used

19

PK

439

Ignition 1 Voltage

20

OG

440

Battery Positive Voltage

21

PK

1020

Ignition 0 Voltage

22

PU

1589

Fuel Level Sensor Signal - Primary

23-24

--

--

Not Used

25

YE/BK

1827

Vehicle Speed Signal

26-27

--

--

Not Used

28

PU

420

TCC Brake/Cruise Control Release Switch Signal

29

D-GN

1433

PNP Switch Signal

30

TN

472

IAT Sensor Signal

31

PU

806

Crank Voltage

32

D-GN/WH

817

Vehicle Speed Signal

33-40

--

--

Not Used

41

RD/BK

380

A/C Refrigerant Pressure Sensor Signal

42

D-GN/WH

459

A/C Compressor Clutch Relay Control

43

D-BU

2364

Cooling Fan Speed Signal

44

BN

436

Air Pump Relay Control (K18)

45-47

--

--

Not Used

48

YE/BK

625

Starter Enable Relay Control

49

WH

121

Engine Speed Signal

50-53

--

--

Not Used

54

GY

2700

5-Volt Reference

55

WH/BK

1164

5-Volt Reference

56

--

--

Not Used

57

WH/BK

2366

Cooling Fan Clutch Control

58

YE

710

Class 2 Serial Data

59

D-GN

1049

Class 2 Serial Data

60

GY

2365

Low Reference

61

D-GN

890

Fuel Tank Pressure Sensor Signal

62

GY

2709

5-Volt Reference

63

TN

1274

5-Volt Reference

64-65

--

--

Not Used

Powertrain Control Module (PCM) C2


Object Number: 697006  Size: CH

Connector Part Information

    • 15354781
    • 65-Way F Metri-Pack 280 (D-GY)

Pin

Wire Color

Circuit No.

Function

1

PU

574

Low Reference

2

L-GN/BK

822

VSS Low Signal

3

D-GN/WH

465

Fuel Pump Relay Control

4

L-BU/WH

1229

Pressure Control Solenoid Valve Low Control

5

RD/BK

1228

Pressure Control Solenoid Valve High Control

6

YE/BK

846

Fuel Injector 6 Control

7

BK/WH

845

Fuel Injector 5 Control

8

L-BU/BK

844

Fuel Injector 4 Control

9

YE

573

CKP Sensor Signal

10

PU/WH

821

VSS High Signal

11

TN/BK

464

Delivered Torque Signal

12

OG/BK

463

Requested Torque Signal

13

--

--

Not Used

14

BK

1744

Fuel Injector 1 Control

15

L-GN/BK

1745

Fuel Injector 2 Control

16

PK/BK

1746

Fuel Injector 3 Control

17

WH

1310

EVAP Canister Vent Solenoid Control

18

TN/WH

1669

HO2S Low Signal - Bank 1 Sensor 2

19

YE

410

ECT Sensor Signal

20

D-GN/WH

428

EVAP Canister Purge Solenoid Control

21

--

--

Not Used

22

BN

418

TCC PWM Solenoid Valve Control

23

PU/WH

1665

HO2S High Signal - Bank 1 Sensor 1

24

--

--

Not Used

25

L-GN

432

MAP Sensor Signal

26

PU/WH

1668

HO2S High Signal - Bank 1 Sensor 2

27

WH

687

3-2 Shift Solenoid Valve Control

28

BK/WH

771

Transmission Range Switch Signal A

29

TN/BK

231

Oil Pressure Switch Signal

30

BK/WH

1423

HO2S Heater Low Control - Bank 1 Sensor 2

31

D-GN

676

HO2S Heater Low Control - Bank 1 Sensor 1

32

TN

1664

HO2S Low Signal - Bank 1 Sensor 1

33

--

--

Not Used

34

L-BU/WH

2126

IC 6 Control

35

L-BU

2123

IC 3 Control

36

--

--

Not Used

37

TN/BK

422

TCC Solenoid Valve Control

38

--

--

Not Used

39

BN

2198

Camshaft Position Solenoid Actuator High Control

40

D-GN

2125

IC 5 Control

41

D-GN/WH

2124

IC 4 Control

42

RD/WH

2122

IC 2 Control

43

--

--

Not Used

44

PU

2121

IC 1 Control

45-50

--

--

Not Used

51

GY

23

Generator Field Duty Cycle Signal

52-53

--

--

Not Used

54

OG/BK

469

Low Reference

55-56

--

--

Not Used

57

YE/BK

1223

2-3 Shift Solenoid Valve Control

58

BK

2761

Low Reference

59

L-GN

1222

1-2 Shift Solenoid Valve Control

60-61

--

--

Not Used

62

BK

2199

Low Reference

63

--

--

Not Used

64

GY

2704

5-Volt Reference

65

BK

450

Ground

Powertrain Control Module (PCM) C3


Object Number: 697005  Size: CH

Connector Part Information

    • 15354780
    • 65-Way F Metri-Pack 280 (WH)

Pin

Wire Color

Circuit No.

Function

1

D-BU

496

KS 1 Signal

2

RD

225

Generator Turn On Signal

3

GY

2701

5-Volt Reference

4-7

--

--

Not Used

8

BK

2762

Low Reference

9

L-BU

1876

Knock Sensor 2 Signal

10

D-BU

1225

Transmission Fluid Pressure Switch Signal B

11

--

--

Not Used

12

YE

772

Transmission Range Switch Signal B

13

WH

776

Transmission Range Switch Signal P

14

PU

421

Air Solenoid Relay Control (K18)

15

--

--

Not Used

16

BK/WH

1704

Low Reference

17

PK

839

Ignition 1 Voltage

18

RD

631

12-Volt Reference

19

RD

1226

Transmission Fluid Pressure Switch Signal C

20

GY

773

Transmission Range Switch Signal C

21

PK

1224

Transmission Fluid Pressure Switch Signal A

22

YE/BK

1227

TFT Sensor Signal

23

GY

1716

Low Reference

24

--

--

Not Used

25

BN

582

TAC Motor Control - 2

26

YE

581

TAC Motor Control - 1

27

--

--

Not Used

28

D-GN

485

TP Sensor 1 Signal

29

PK/BK

632

Low Reference

30

PU

486

TP Sensor 2 Signal

31

GY

2303

Low Reference

32-48

--

--

Not Used

49

L-BU/BK

1688

5-Volt Reference

50

--

--

Not Used

51

BN/WH

633

CMP Sensor Signal

52-57

--

--

Not Used

58

PU

114

Low Oil Pressure Switch Signal

59

BK

2752

Low Reference

60

GY

597

5-Volt Reference

61-65

--

--

Not Used