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: 1335548  Size: CH

Connector Part Information

    • 15430216 (2WD)
    • 15430217 (4WD)
    • 56-Way F Micro 64 Sealed (BU)

Pin

Wire Color

Circuit No.

Function

1-2

--

--

Not Used

3

D-GN/WH

1559

4 LO Switch - Signal (4WD)

4-5

--

--

Not Used

6

D-GN/WH

459

A/C Compressor Relay Control

7

BN

1271

Low Reference

8

PU

1272

Low Reference

9-11

--

--

Not Used

12

PU

1589

Fuel Level Sensor Signal

13

PK

739

Ignition 1 Voltage

14

--

--

Not Used

15

PU

1807

Class 2 Serial Data

16

PU

1807

Class 2 Serial Data

17

GY

2700

5-Volt Reference

18

BN

4

Accessory Voltage

19

PK

639

Ignition 1 Voltage

20

OG

440

Battery Positive Voltage

21

--

--

Not Used

22

WH

1310

EVAP Canister Vent Solenoid Control

23

--

--

Not Used

24

D-GN

890

Fuel Tank Pressure Sensor Signal

25

YE/BK

1827

Vehicle Speed Signal

26

RD/BK

380

A/C Refrigerant Pressure Sensor Signal

27

D-BU

1161

APP Sensor 1 Signal

28

--

--

Not Used

29

BK

2759

Low Reference

30

WH/BK

1164

5-Volt Reference

31

--

--

Not Used

32

L-BU

20

Stop Lamp Supply Voltage

33-36

--

--

Not Used

37

D-GN/WH

465

Fuel Pump Relay Control

38

WH/BK

448

Powertrain Diagnostic Enable

39

--

--

Not Used

40

BN/WH

419

MIL Control

41

L-BU

1162

APP Sensor 2 Signal

42

--

--

Not Used

43

TN

1274

5-Volt Reference

44

GY

1884

Cruise Control Set/Coast and Resume/Accelerate Switch Signal

45

--

--

Not Used

46

PU

420

TCC Brake Switch/Cruise Control Release Signal

47

GY

2709

5-Volt Reference

48

YE/BK

625

Starter Relay Control

49-52

--

--

Not Used

53

BN/WH

379

CPP Switch Signal (MA5)

54

D-GN

1433

PNP/Clutch Start Switch Signal

55

--

--

Not Used

56

BK

2751

Low Reference

Powertrain Control Module (PCM) C2


Object Number: 1335545  Size: CH

Connector Part Information

    • 15445051
    • 73-Way F Micro 64 Sealed (BK)

Pin

Wire Color

Circuit No.

Function

1

RD

225

Generator Turn On Signal

2

D-GN

485

TP Sensor 1 Signal

3-5

--

--

Not Used

6

GY

2701

5-Volt Reference

7

PU

486

TP Sensor 2 Signal

8

GY

2704

5-Volt Reference

9

L-BU/BK

1688

5-Volt Reference

10-12

--

--

Not Used

13

PU

2329

Camshaft Position Signal

14

PK/BK

632

Low Reference

15

L-BU

2344

Low Reference

16

--

--

Not Used

17

YE

573

CKP Sensor 1 Signal

18

PU

574

Low Reference

19

WH/BK

2257

Low Reference

20

OG/BK

469

Low Reference

21

--

--

Not Used

22

RD

631

12-Volt Reference

23

RD

1673

12-Volt Reference

24-25

--

--

Not Used

26

BK

630

Camshaft Position Signal

27-31

--

--

Not Used

32

TN/WH

1653

HO2S Low Signal

33

BK

1744

Fuel Injector 1 Control

34

--

--

Not Used

35

YE

410

ECT Sensor Signal

36

BK/WH

1704

Low Reference

37

L-GN

432

MAP Sensor Signal

38

--

--

Not Used

39

BK

2752

Low Reference

40

PU

2121

IC 1 Control

41

YE

492

MAF Sensor Signal

42

D-GN

2125

IC 5 Control

43

--

--

Not Used

44

RD/WH

2122

IC 2 Control

45

GY

23

Generator Field Duty Cycle Signal

46

--

--

Not Used

47

GY

2702

CMP Actuator Solenoid High Control

48

D-GN

1655

HO2S High Signal

49-50

--

--

Not Used

51

TN

472

IAT Sensor Signal

52

BK

2761

Low Reference

53

PK/BK

1746

Fuel Injector 3 Control

54

L-BU/BK

844

Fuel Injector 4 Control

55

BK/WH

845

Fuel Injector 5 Control

56

L-GN/BK

1745

Fuel Injector 2 Control

57

--

--

Not Used

58

D-GN

676

HO2S Heater High Control

59

L-BU

2123

IC 3 Control

60

D-GN/WH

2124

IC 4 Control

61-63

--

--

Not Used

64

BK

2760

Low Reference

65

BN

582

TAC Motor Control - 2

66

YE

581

TAC Motor Control - 1

67

--

--

Not Used

68

D-BU

496

Knock Sensor Signal

69

GY

1716

Low Reference

70-72

--

--

Not Used

73

BK/WH

451

Ground

Powertrain Control Module (PCM) C3


Object Number: 1335548  Size: CH

Connector Part Information

    • 15430212
    • 56-Way F Micro 64 Sealed (GY)

Pin

Wire Color

Circuit No.

Function

1

PK

1224

Transmission Fluid Pressure Switch Signal A (M30)

2

GY

773

Transmission Range Switch Signal C (M30)

3

--

--

Not Used

4

TN/WH

1669

HO2S Low Signal

5

--

--

Not Used

6

RD/BK

1228

PC Solenoid Valve High Control (M30)

7

YE/BK

1227

TFT Sensor Signal (M30)

8-14

--

--

Not Used

15

TN/BK

231

Oil Pressure Switch Signal

16

--

--

Not Used

17

BK

2762

Low Reference (M30)

18

--

--

Not Used

19

PU/WH

1668

HO2S High Signal

20

BK/WH

771

Transmission Range Switch Signal A (M30)

21

WH

687

3-2 Shift Solenoid Valve Control (M30)

22-24

--

--

Not Used

25

TN/BK

422

TCC Solenoid Valve Control (M30)

26-29

--

--

Not Used

30

RD

1226

Transmission Fluid Pressure Switch Signal C (M30)

31-32

--

--

Not Used

33

L-GN

1222

1-2 Shift Solenoid Valve Control (M30)

34

TN/BK

464

Delivered Torque Signal (2WD)

35

YE/BK

1223

2-3 Shift Solenoid Valve Control (M30)

36

PU

114

Low Oil Pressure Switch Signal

37

D-GN/WH

428

EVAP Canister Purge Solenoid Control

38

--

--

Not Used

39

BN

418

TCC PWM Solenoid Valve Control (M30)

40-42

--

--

Not Used

43

D-BU

1225

Transmission Fluid Pressure Switch Signal B (M30)

44

PU

401

Signal Low - Front

45

YE

400

Signal High - Front

46

BK/WH

1423

HO2S Heater Low Control

47

OG/BK

463

Requested Torque Signal (2WD)

48

L-BU/WH

1229

PC Solenoid Valve Low Control (M30)

49

--

--

Not Used

50

YE

772

Transmission Range Switch Signal B (M30)

51

--

--

Not Used

52

WH

776

Transmission Range Switch Signal P (M30)

53-56

--

--

Not Used