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

Powertrain Control Module - C1


Object Number: 73173  Size: CH

Connector Part Information

    • 12191110
    • 80-Way F Micro-Pack 100 Series Sealed (BU)

Pin

Wire Color

Circuit No.

Function

1

BK

2762

Low Reference

2-3

--

--

Not Used

4

L-GN

1222

1-2 Shift Solenoid Valve Control

5

D-BU

473

High Speed Cooling Fan Relay Control

6

D-GN

335

Low Speed Cooling Fan Relay Control

7

BN/WH

633

CMP Sensor Signal

8

PU/WH

430

Low Resolution Engine Speed Signal

9

L-BU/BK

647

Medium Resolution Engine Speed Signal

10

GY

2704

5-Volt Reference

11

--

--

Not Used

12

TN

413

HO2S 1 Low Signal

13

OG/BK

469

Low Reference

14-15

--

--

Not Used

16

BK/WH

451

Ground

17

BK

2760

Low Reference

18

--

--

Not Used

19

D-GN

500

Ignition 0 Voltage

20

OG

540

Battery Positive Voltage

21-27

--

--

Not Used

28

TN/WH

1669

HO2S 2 Low Signal

29

BK

808

Low Reference

30

PU

420

TCC Brake Switch/Cruise Control Release Signal

31

BK

2753

Low Reference

32

GY

435

EGR Solenoid Low Control

33

D-BU

496

Knock Sensor Signal

34-37

--

--

Not Used

38

L-GN/WH

1749

IAC Coil B High Control

39-42

--

--

Not Used

43

BK

1744

Fuel Injector 1 Control

44

YE/BK

1223

2-3 Shift Solenoid Valve Control

45

--

--

Not Used

46

PK/BK

1746

Fuel Injector 3 Control

47

L-GN/BK

1745

Fuel Injector 2 Control

48

RD/BK

453

Low Reference

49-52

--

--

Not Used

53

TN/BK

424

IC Timing Signal

54

WH

423

IC Timing Control

55

D-GN

389

Vehicle Speed Signal

56

BK/WH

451

Ground

57

BK/WH

451

Ground

58

D-GN

1049

PCM Class 2 Serial Data

59

--

--

Not Used

60

BK/WH

451

Ground

61

BK

2752

Low Reference

62

D-BU/WH

1231

A/T ISS Low Signal

63

RD/BK

1230

A/T ISS High Signal

64

YE

400

VSS Signal High

65

PU

401

VSS Signal Low

66-67

--

--

Not Used

68

YE

772

Transmission Range Switch Signal B

69

YE

492

MAF Sensor Signal

70-71

--

--

Not Used

72

D-GN

83

Cruise Control Inhibit Signal

73

BK/WH

845

Fuel Injector 5 Control

74

L-BU

1296

Axle Actuator Control (AWD)

75

--

--

Not Used

76

D-GN/WH

428

EVAP Canister Purge Solenoid Control

77-78

--

--

Not Used

79

YE/BK

846

Fuel Injector 6 Control

80

BK

2751

Low Reference

Powertrain Control Module - C2


Object Number: 73173  Size: CH

Connector Part Information

    • 12191110
    • 80-Way F Micro-Pack 100 Series Sealed (CL)

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

WH

1310

EVAP Canister Vent Solenoid Control

3

D-GN/WH

465

Fuel Pump Relay Control

4

RD

1676

EGR Solenoid High Control

5

BN/WH

419

MIL Control

6

--

--

Not Used

7

L-BU/WH

1747

IAC Coil A High Control

8-9

--

--

Not Used

10

PU

412

HO2S 1 High Signal

11

PU/WH

1668

HO2S 2 High Signal

12-15

--

--

Not Used

16

WH

776

Transmission Range Switch Signal P

17

--

--

Not Used

18

BK/WH

771

Transmission Range Switch Signal A

19

TN/BK

231

Oil Pressure Switch Signal

20-22

--

--

Not Used

23

YE

5

Crank Voltage

24

PK

439

Ignition 1 Voltage

25

L-GN

432

MAP Sensor Signal

26

YE

410

ECT Sensor Signal

27

RD/BK

380

A/C Refrigerant Pressure Sensor Signal

28

BN

1456

EGR Valve Position Signal

29

--

--

Not Used

30

GY

2702

5-Volt Reference

31

--

--

Not Used

32

GY

2709

5-Volt Reference

33

GY

2701

5-Volt Reference

34

GY

2700

5-Volt Reference

35

BK

2759

Low Reference

36

--

--

Not Used

37

BK/WH

3113

HO2S 1 Heater Low Control

38

--

--

Not Used

39

D-GN/WH

459

A/C Compressor Clutch Relay Control

40-41

--

--

Not Used

42

L-BU/BK

844

Fuel Injector 4 Control

43

--

--

Not Used

44

L-BU/BK

1748

IAC Coil A Low Control

45

RD/BK

1228

PC Solenoid Valve High Control

46

L-BU/WH

1229

PC Solenoid Valve Low Control

47-48

--

--

Not Used

49

L-GN/BK

444

IAC Coil B Low Control

50

TN

472

IAT Sensor Signal

51-54

--

--

Not Used

55

D-GN

890

Fuel Tank Pressure Sensor Signal

56

GY

773

Transmission Range Switch Signal C

57-58

--

--

Not Used

59

WH

85

Cruise Control Engaged Signal

60

--

--

Not Used

61

RD

225

Generator Turn On Signal

62

--

--

Not Used

63

YE

657

TCC Release Switch Signal

64-65

--

--

Not Used

66

D-BU

417

TP Sensor Signal

67

--

--

Not Used

68

YE/BK

1227

TFT Sensor Signal

69

PU

1589

Fuel Level Sensor Signal

70

L-GN

1867

12-Volt Reference

71

--

--

Not Used

72

RD/WH

812

12-Volt Reference

73

BK

407

Low Reference

74

YE/BK

1868

Low Reference

75

BN

436

AIR Pump Relay Control

76

YE/BK

625

Crank Relay Control

77

--

--

Not Used

78

BN

418

TCC PWM Solenoid Valve Control

79

--

--

Not Used

80

BK

808

Low Reference