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: 697006  Size: CH

Connector Part Information

    • 15336489
    • 65-Way F (BLU)

Pin

Wire Color

Circuit No.

Function

1

LT BLU

1162

APP Sensor 2 Signal

2

DK BLU

1161

APP Sensor 1 Signal

3

LT BLU

1320

Stop Lamp Supply Voltage

4

GRY/BLK

1694

4WD Low Signal (w/4WD)

5

GRY/BLK

87

Cruise Control Resume/Accel Switch Signal

6

DK BLU

84

Cruise Control Set/Coast Switch Signal

7

BRN/WHT

419

MIL Control

8

ORN/BLK

510

Low Reference

9

--

--

Not Used

10

BRN

1271

Low Reference

11

PPL

1272

Low Reference

12

BLK

2759

Low Reference

13

BLK

2760

Low Reference

14

BLK

2751

Low Reference

15-16

--

--

Not Used

17

GRY

397

Cruise Control On Switch Signal

18

--

--

Not Used

19

PNK

439

Ignition 1 Voltage

20

ORN

440

Battery Positive Voltage

21

PNK

1020

Ignition 0 Voltage

22

PPL

1589

Fuel Level Sensor Signal - Primary

23-24

--

--

Not Used

25

YEL/BLK

1827

Vehicle Speed Signal

26-27

--

--

Not Used

28

PPL

420

TCC Brake/Cruise Control Release Switch Signal

29

DK GRN

1433

PNP Switch Signal

30

TAN

472

IAT Sensor Signal

31

PPL

806

Crank Voltage

32

DK GRN/WHT

817

VSS Signal

33-40

--

--

Not Used

41

RED/BLK

380

A/C Refrigerant Pressure Sensor Signal

42

DK GRN/WHT

459

A/C Compresor Clutch Relay Control

43

DK BLU

2364

Cooling Fan Speed Signal

44-47

--

--

Not Used

48

YEL/BLK

625

Starter Enable Relay Control

49

WHT

121

Engine Speed Signal

50-53

--

--

Not Used

54

GRY

2700

5 Volt Reference

55

WHT/BLK

1164

5 Volt Reference

56

--

--

Not Used

57

WHT/BLK

2366

Cooling Fan Clutch Control

58

YEL

710

Class 2 Serial Data

59

DK GRN

1049

Class 2 Serial Data

60

GRY

2365

Low Reference

61

DK GRN

890

Fuel Tank Pressure Sensor Signal

62

GRY

2709

5 Volt Reference

63

TAN

1274

5 Volt Reference

64-65

--

--

Not Used

Powertrain Control Module (PCM) C2


Object Number: 697006  Size: CH

Connector Part Information

    • 15336488
    • 65-Way F (DK GRY)

Pin

Wire Color

Circuit No.

Function

1

PPL

574

Low Reference

2

LT GRN/BLK

822

VSS Low Signal

3

DK GRN/WHT

465

Fuel Pump Relay Control - Primary

4

LT BLU/WHT

1229

PC Solenoid Low Control

5

RED/BLK

1228

PC Solenoid High Control

6

YEL/BLK

846

Fuel Injector 6 Control

7

BLK/WHT

845

Fuel Injector 5 Control

8

LT BLU/BLK

844

Fuel Injector 4 Control

9

YEL

573

CKP Sensor Signal

10

PPL/WHT

821

VSS High Signal

11

TAN/BLK

464

Delivered Torque Signal (w/NW7)

12

ORN/BLK

463

Requested Torque Signal (w/NW7)

13

--

--

Not Used

14

BLK

1744

Fuel Injector 1 Control

15

LT GRN/BLK

1745

Fuel Injector 2 Control

16

PNK/BLK

1746

Fuel Injector 3 Control

17

WHT

1310

EVAP Canister Vent Solenoid Control

18

TAN/WHT

1669

HO2S Low Signal - Bank 1 Sensor 2

19

YEL

410

ECT Sensor Signal

20

DK GRN/WHT

428

EVAP Canister Purge Solenoid Control

21

BLK

2766

Low Reference

22

BRN

418

TCC PWM Solenoid Valve Control

23

PPL/WHT

1665

HO2S High Signal - Bank 1 Sensor 1

24

--

--

Not Used

25

LT GRN

432

MAP Sensor Signal

26

PPL/WHT

1668

HO2S High Signal - Bank 1 Sensor 2

27

WHT

687

3-2 Shift Solenoid Valve Control

28

BLK/WHT

771

Transmission Range Switch Signal A

29

TAN/BLK

231

Oil Pressure Switch Signal

30

BLK/WHT

1423

HO2S Heater Low Control - Bank 1 Sensor 2

31

DK GRN

676

HO2S Heater Low Control - Bank 1 Sensor 1

32

TAN

1664

HO2S Low Signal - Bank 1 Sensor 1

33

--

--

Not Used

34

LT BLU/WHT

2126

IC 6 Control

35

LT BLU

2123

IC 3 Control

36

--

--

Not Used

37

TAN/BLK

422

TCC Solenoid Valve Control

38

--

--

Not Used

39

BRN

2198

Camshaft Position Solenoid Actuator High Control

40

DK GRN

2125

IC 5 Control

41

DK GRN/WHT

2124

IC 4 Control

42

RED/WHT

2122

IC 2 Control

43

DK GRN

1313

Oil Temperature Sensor Signal

44

PPL

2121

IC 1 Control

45-46

--

--

Not Used

47

BRN

1174

Oil Level Switch Signal

48-50

--

--

Not Used

51

GRY

23

Generator Field Duty Cycle Signal

52-53

--

--

Not Used

54

ORN/BLK

469

Low Reference

55-56

--

--

Not Used

57

YEL/BLK

1223

2-3 Shift Solenoid Valve Control

58

BLK

2761

Low Reference

59

LT GRN

1222

1-2 Shift Solenoid Valve Control

60-61

--

--

Not Used

62

BLK

2199

Low Reference

63

--

--

Not Used

64

GRY

2704

5 Volt Reference

65

BLK

450

Ground

Powertrain Control Module (PCM) C3


Object Number: 697006  Size: CH

Connector Part Information

    • 15336487
    • 65-Way F (NAT)

Pin

Wire Color

Circuit No.

Function

1

DK BLU

496

KS 1 Signal

2

RED

225

Generator Turn On Signal

3

GRY

2701

5 Volt Reference

4

PNK/WHT

1101

Damping Lift/Dive Signal

5-7

--

--

Not Used

8

BLK

2762

Low Reference

9

LT BLU

1876

Knock Sensor 2 Signal

10

DK BLU

1225

Transmission Fluid Pressure Switch Signal B

11

--

--

Not Used

12

YEL

772

Transmission Range Switch Signal B

13

WHT

776

Transmission Range Switch Signal P

14-15

--

--

Not Used

16

BLK/WHT

1704

Low Reference

17

PNK

839

Ignition 1 Voltage

18

RED

631

12 Volt Reference

19

RED

1226

Transmission Fluid Pressure Switch Signal C

20

GRY

773

Transmission Range Switch Signal C

21

PNK

1224

Transmission Fluid Pressure Switch Signal A

22

YEL/BLK

1227

TFT Sensor Signal

23

GRY

1716

Low Reference

24

--

--

Not Used

25

BRN

582

TAC Motor Control - 2

26

YEL

581

TAC Motor Control - 1

27

--

--

Not Used

28

DK GRN

485

TP Sensor 1 Signal

29

PNK/BLK

632

Low Reference

30

PPL

486

TP Sensor 2 Signal

31

GRY

2303

Low Reference

32-48

--

--

Not Used

49

LT BLU/BLK

1688

5 Volt Reference

50

--

--

Not Used

51

BRN/WHT

633

CMP Sensor Signal

52-57

--

--

Not Used

58

PPL

114

Low Oil Pressure Switch Signal

59

BLK

2752

Low Reference

60

GRY

597

5 Volt Reference

61-65

--

--

Not Used