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 64 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

5-6

--

--

Not Used

7

BLK

2760

Low Reference

8-10

--

--

Not Used

11

BLK

2759

Low Reference

12-14

--

--

Not Used

15

PPL

1807

Class 2 Serial Data

16

--

--

Not Used

17

BRN/WHT

379

CPP Switch Signal-Manual Transmission

17

--

--

Not Used-Automatic Transmission

18

PPL

1500

Ignition 0 Voltage

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

23

GRY

2700

5 Volt Reference

24

--

--

Not Used

25

GRY

2709

5 Volt Reference

26-29

--

--

Not Used

30

DK BLU

473

High Speed Cooling Fan Relay Control

31-32

--

--

Not Used

33

BRN/WHT

419

MIL Control

34

DK GRN/WHT

817

Vehicle Speed Signal

35-36

--

--

Not Used

37

RED/BLK

380

A/C Refrigerant Pressure Sensor Signal

38

--

--

Not Used

39

DK GRN

890

Fuel Tank Pressure Sensor Signal

40-42

--

--

Not Used

43

DK GRN

335

Low Speed Cooling Fan Relay Control

44

--

--

Not Used

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 Relay Control

48

--

--

Not Used

49

DK GRN

83

Cruise Control Inhibit Signal

50

--

--

Not Used

51

BLK

2751

Low Reference

52-56

--

--

Not Used

Powertrain Control Module (PCM), C2


Object Number: 784850  Size: CH

Connector Part Information

    • 15357133
    • 73-Way F Micro-Pack 64 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

3-4

--

--

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

8-9

--

--

Not Used

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

CMP Sensor Signal

27

YEL

573

CKP Sensor 1 Signal

28

PPL

574

Low Reference

29

LT GRN

432

MAP Sensor Signal

30

--

--

Not Used

31

DK BLU

417

TP Sensor Signal

32-33

--

--

Not Used

34

WHT

776

Transmission Range Switch Signal P-Automatic Transmission Only

35

GRY

773

Transmission Range Switch Signal C-Automatic Transmission Only

36

YEL

772

Transmission Range Switch Signal B-Automatic Transmission Only

37

BLK/WHT

771

Transmission Range Switch Signal A-Automatic Transmission Only

38

--

--

Not Used

39

BLK/WHT

2761

Low Reference

40

WHT/BLK

2762

Low Reference

41

DK BLU/WHT

1231

AT ISS Low Signal

42

PPL

401

VSS Low Signal

43

--

--

Not Used

44

GRY

1716

Low Reference

45

ORN/BLK

469

Low Reference

46

--

--

Not Used

47

BLK

2752

Low Reference

48

--

--

Not Used

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 High Signal - Automatic Transmission Only

62

YEL

400

VSS High Signal

63

--

--

Not Used

64

DK BLU

496

Knock Sensor Signal

65

BRN

2704

5 Volt Reference (Automatic Transmission)

65

GRY

2704

5 Volt Reference (Manual Transmission)

66

--

--

Not Used

67

GRY/BLK

2701

5 Volt Reference

68

--

--

Not Used

69

DK GRN

676

HO2S Heater High Control (Bank 1 Sensor 1)

70

BLK/WHT

1423

HO2S Heater Low Control (Bank 1 Sensor 2)

71

LT BLU/BLK

844

Fuel Injector 4 Control

72

PNK/BLK

1746

Fuel Injector 3 Control

73

BLK/WHT

451

Ground