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

Powertrain Control Module (PCM) C1


Object Number: 1335548  Size: CH

Connector Part Information

  • OEM: 15430216 (2WD)
  • OEM: 15430217 (4WD)
  • Service: 88953346
  • Description: 56-Way F Micro 64 Sealed (BU)

Terminal Part Information

  • Pins: 3, 6, 7, 8, 12, 13, 15, 16, 17, 18, 19, 20, 22, 24, 25, 26, 27, 29, 30, 32, 37, 38, 40, 41, 43, 44, 46, 47, 48, 53, 54, 56
  • Terminal/Tray: 15359541/4
  • Core/Insulation Crimp: M/M
  • Release Tool/Test Probe: 15381651-2/J-35616-64B (L-BU)
  • Pins: 34
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Powertrain Control Module (PCM) C1

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

BN/WH

6254

ISS Signal

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

--

--

Not Used

34

BN

436

AIR Pump Relay Control

35-36

--

--

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 Enable Relay Control

49-52

--

--

Not Used

53

BN/WH

379

CPP Switch Signal

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

  • OEM: 15445051
  • Service: 88953274
  • Description: 73-Way F Micro 64 Sealed (BK)

Terminal Part Information

  • Pins: 1, 2, 6, 7, 8, 9, 14, 17, 18, 20, 22, 26, 32, 33, 35, 36, 37, 39, 40, 41, 42, 45, 47, 48, 51, 52, 53, 54, 55, 58, 59, 60, 64, 65, 66, 68, 69
  • Terminal/Tray: 15359541/4
  • Core/Insulation Crimp: M/M
  • Release Tool/Test Probe: 15381651-2/J-35616-64B (L-BU)
  • Pins: 19
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit
  • Pins: 73
  • Terminal/Tray: 15304720/19
  • Core/Insulation Crimp: 4/5
  • Release Tool/Test Probe: 15315247/J-35616-4A (PU)

Powertrain Control Module (PCM) C2

Pin

Wire Color

Circuit No.

Function

1

PU

5428

Generator Regulator Control

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

10-13

--

--

Not Used

14

PK/BK

632

Low Reference

15-16

--

--

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

BN/WH

6254

ISS Signal

24-25

--

--

Not Used

26

BK

630

Camshaft Position Signal

27-31

--

--

Not Used

32

TN/WH

1653

HO2S Low Signal Sensor 1

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/WH

2124

IC 4 Control

43-44

--

--

Not Used

45

GY

23

Generator Field Duty Cycle Signal

46

--

--

Not Used

47

BN

2198

Camshaft Position Actuator Solenoid High Control

48

D-GN

1655

HO2S High Signal Sensor 1

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-GN/BK

1745

Fuel Injector 2 Control

55

L-BU/BK

844

Fuel Injector 4 Control

56-57

--

--

Not Used

58

D-GN

676

HO2S Heater High Control Sensor 1

59

L-BU

2123

IC 3 Control

60

RD/WH

2122

IC 2 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

KS Signal

69

GY

1716

KS Signal

70-72

--

--

Not Used

73

BK/WH

451

Ground

Powertrain Control Module (PCM) C3


Object Number: 1335548  Size: CH

Connector Part Information

  • OEM: 15430212
  • Service: 88953347
  • Description: 56-Way F Micro 64 Sealed (GY)

Terminal Part Information

  • Pins: 1, 2, 4, 6, 7, 15, 17, 19, 20, 21, 25, 30, 33, 35, 36, 37, 39, 43, 44, 45, 46, 48, 50, 52
  • Terminal/Tray: 15359541/4
  • Core/Insulation Crimp: M/M
  • Release Tool/Test Probe: 15381651-2/J-35616-64B (L-BU)
  • Pins: 34, 47
  • Terminal/Tray: See Terminal Repair Kit
  • Core/Insulation Crimp: See Terminal Repair Kit
  • Release Tool/Test Probe: See Terminal Repair Kit

Powertrain Control Module (PCM) C3

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 Sensor 2

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 Sensor 2

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 (NW7)

35

YE/BK

1223

2-3 Shift Solenoid Valve Control (M30)

36

PU

114

Low Reference

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 Sensor 2

47

OG/BK

463

Requested Torque Signal (NW7)

48

L-BU/WH

1229

PC Solenoid Valve Low Control (M30)

49

D-BU

6253

Low Reference

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