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

Powertrain Control Module (PCM) C1


Object Number: 784851  Size: CH

Connector Part Information

    • 15357150
    • 56-Way F Micro-Pack 064 Series (BLU)

Pin

Wire Color

Circuit No.

Function

1-3

--

--

Not Used

4

PPL

420

TCC Brake Switch/Cruise Control Release Signal -- Automatic Transmission Only

5

PPL

5607

Fuel Gage Select Signal

6

--

--

Not Used

7

BLK

2760

Low Reference

8-9

--

--

Not Used

10

TAN

5631

Low Reference

11

BLK

2759

Low Reference

12-14

--

--

Not Used

15

PPL

1807

Class 2 Serial Data -- Primary

16

PPL

1807

Class 2 Serial Data -- Primary

17-18

--

--

Not Used

19

PNK

639

Ignition 1 Voltage

20

ORN

480

Battery Positive Voltage

21

TAN

472

IAT Sensor Signal

22

PPL

1589

Fuel Level Sensor Signal -- Primary

23

GRY

2700

5 Volt Reference

24

GRY

5634

5 Volt Reference

25

GRY

2709

5 Volt Reference

26-28

--

--

Not Used

29

LT GRN

5606

Fuel Indicator Lamp Control

30

--

--

Not Used

31

BRN

436

AIR Relay Control

32

--

--

Not Used

33

BRN/WHT

419

MIL Control

34

DK GRN/WHT

817

Vehicle Speed Signal

35

PNK/BLK

5605

Fuel Injector Module Status

36

--

--

Not Used

37

RED/BLK

380

A/C Refrigerant Pressure Sensor Signal

38

DK BLU

5632

AF Fuel Tank Temperature Sensor Signal

39

DK GRN

890

Fuel Tank Pressure Sensor Signal

40-42

--

--

Not Used

43

DK GRN

335

Cooling Fan Relay Control

44

RED

2531

AF Relay Control

45

WHT

1310

EVAP Canister Vent Solenoid Control

46

DK GRN/WHT

465

Fuel Pump Relay Control

47

DK GRN/WHT

459

A/C Compressor Clutch Control

48

--

--

Not Used

49

DK GRN

83

Cruise Disable Output

50

DK BLU

2712

AF Fuel Temperature Sensor Signal

51

BLK

2751

Sensor Ground

52-56

--

--

Not Used

Powertrain Control Module (PCM) C2


Object Number: 784850  Size: CH

Connector Part Information

    • 15357133
    • 73-Way F Micro-Pack 064 Series (BLK)

Pin

Wire Color

Circuit No.

Function

1

LT BLU/BLK

1748

IAC Coil A Low Control

2

LT BLU/WHT

1747

IAC Coil A High Control

3

LT BLU

5618

High Pressure Lock - Off Control

4

--

--

Not Used

5

DK GRN/WHT

428

EVAP Canister Purge Solenoid Control

6

RED/BLK

1228

PC Solenoid Valve High Control - Sol. A -- Automatic Transmission Only

7

LT BLU/WHT

1229

PC Solenoid Valve Low Control - Sol A -- Automatic Transmission Only

8

--

--

Not Used

9

PNK/BLK

429

AIR Solenoid Control

10

LT GRN

1222

1-2 Shift Solenoid Valve Control -- Automatic Transmission Only

11

YEL/BLK

1223

2-3 Shift Solenoid Valve Control -- Automatic Transmission Only

12

BRN

418

TCC PWM Solenoid Valve Control -- Automatic Transmission Only

13

PPL/WHT

1668

HO2S High Signal Bank 1 Sensor 2

14

TAN/WHT

1669

HO2S Low Signal -- Bank 1 Sensor 2

15

TAN

1667

HO2S Low Signal -- Bank 2 Sensor 1

16

PPL

1666

HO2S High Signal -- Bank 2 Sensor 1

17

LT GRN/WHT

1749

IAC Coil B High Control

18

LT GRN/BLK

444

IAC Coil B Low Control

19

WHT

423

IC Timing Control

20

ORN

406

IC Timing Control B

21-25

--

--

Not Used

26

BRN/WHT

633

CAM Sensor Signal

27

YEL

573

CKP Sensor 1 Signal

28

PPL

574

Low Reference

29

LT GRN

432

MAP Sensor Signal

30

DK GRN/WHT

5633

AF Fuel Tank Pressure Sensor Signal

31

DK BLU

417

TP Sensor Signal

32

DK BLU

5622

AF Fuel Rail Pressure Sensor Signal

33

DK BLU

5617

Low Pressure Lock-Off Control

34

WHT

776

Transmission Range Switch Signal P

35

GRY

773

Transmission Range Switch Signal C

36

YEL

772

Transmission Range Switch Signal B

37

BLK/WHT

771

Transmission Range Switch Signal A

38

--

--

Not Used

39

BLK

2761

Low Reference

40

BLK

2762

Transmission Fluid Temp Signal

41

DK BLU/WHT

1231

AT ISS High Signal -- Automatic Transmission Only

42

PPL

401

Signal Low-Front

43

--

--

Not Used

44

GRY

1716

Low Reference

45

ORN/BLK

469

Low Reference

46

--

--

Not Used

47

BLK

2752

Low Reference

48

BLK

470

Low Reference

49

GRY

23

Generator Field Duty Cycle Signal

50

RED

225

Generator Turn On Signal

51

BLK

1744

Fuel Injector 1 Control

52

LT GRN/BLK

1745

Fuel Injector 2 Control

53

LT BLU/BLK

396

Cruise Control Engaged Signal

54

TAN/BLK

231

Oil Pressure Switch Signal

55

PNK

1224

Transmission Fluid Pressure Switch Signal A -- Automatic Transmission Only

56

DK BLU

1225

Transmission Fluid Pressure Switch Signal B -- Automatic Transmission Only

57

RED

1226

Transmission Fluid Pressure Switch Signal C -- Automatic Transmission Only

58

YEL

657

TCC Release Switch Signal -- Automatic Transmission Only

59

YEL

410

ECT Sensor Signal

60

YEL/BLK

1227

TFT Sensor Signal -- Automatic Transmission Only

61

RED/BLK

1230

AT ISS Low Signal -- Automatic Transmission Only

62

YEL

400

Signal-High Front

63

--

--

Not Used

64

DK BLU

496

Knock Sensor 1 Signal

65

GRY

2704

5 Volt Reference

66

--

--

Not Used

67

GRY

2701

5 Volt Reference

68

GRY

474

5 Volt Reference

69

DK GRN

676

HO2S Heater High Control Bank 1 Sensor 1

70

BLK/WHT

1423

HO2S Heater Low Control

71

LT BLU/BLK

844

Fuel Injector 4 Control

72

PNK/BLK

1746

Fuel Injector 3 Control

73

BLK/WHT

451

Ground