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

450

Ground

2

L-GN

1867

Crankshaft Position Sensor 12-Volt Reference

3

PK/BK

1746

Fuel Injector Control 3

4

L-GN/BK

1745

Fuel Injector Control 2

5-6

--

--

Not Used

7

GY

705

5-Volt Reference

8-10

--

--

Not Used

11

L-BU

1876

Knock Sensor Signal 2

12

D-BU/WH

1869

Crankshaft Position Sensor Signal

13

OG/BK

463

Requested Torque Signal

14

D-BU/WH

774

UART Serial Data Tertiary

15

OG/BK

1061

UART Serial Data Secondary

16

--

--

Not Used

17

D-BU

1225

Transmission Fluid Pressure Switch Signal Bit 2

18

RD

1226

Transmission Fluid Pressure Switch Signal Bit 3

19

PK

439

Run/Crank Ignition 1 Voltage

20

OG

440

Battery Positive Voltage

21

YE/BK

1868

Low Reference

22

--

--

Not Used

23

BK

2759

Fuel Tank Pressure Sensor Low Reference

24

BK

450

Ground

25

TN

1671

Heated Oxygen Sensor Low Signal Bank 2 Sensor 2

26

TN

1667

Heated Oxygen Sensor Low Signal Bank 2 Sensor 1

27

BK

450

Ground

28

TN/WH

1669

Heated Oxygen Sensor Low Signal Bank 1 Sensor 2

29

TN

1664

Heated Oxygen Sensor Low Signal Bank 1 Sensor 1

30-31

--

--

Not Used

32

BK/WH

771

Transmission Position Switch Bit 1 Signal

33

PU

420

Torque Converter Clutch Brake Switch Signal

34

WH

776

Transmission Position Switch Parity Bit Signal

35

--

--

Not Used

36

BK

1744

Fuel Injector Control 1

37

YE/BK

846

Fuel Injector Control 6

38

--

--

Not Used

39

YE/BK

625

Starter Enable Relay Control

40

BK

450

Ground

41

--

--

Not Used

42

D-GN

335

Low Speed Cooling Fan Relay Control

43

RD/BK

877

Fuel Injector Control 7

44

L-BU/BK

844

Fuel Injector Control 4

45

GY

2700

A/C Pressure Sensor 5-Volt Reference

46

GY

2709

Fuel Tank Pressure Sensor 5-Volt Reference

47

--

--

Not Used

48

GY

2704

Manifold Absolute Pressure Sensor 5-Volt Reference

49-50

--

--

Not Used

51

D-BU

496

Knock Sensor Signal 1

52

--

--

Not Used

53

BK

2762

Transmission Fluid Temperature Sensor Low Reference

54

OG/BK

469

Manifold Absolute Pressure Sensor Low Reference

55-56

--

--

Not Used

57

OG

440

Battery Positive Voltage

58

D-GN

1049

ECM/PCM/VCM Class 2 Serial Data

59

YE

710

Class 2 Serial Data Secondary

60

--

--

Not Used

61

PK/BK

632

Camshaft Position Sensor Low Reference

62

--

--

Not Used

63

BK

407

Sensor Low Reference

64

BK

450

Ground

65

PU

1670

Heated Oxygen Sensor High Signal Bank 2 Sensor 2

66

PU

1666

Heated Oxygen Sensor High Signal Bank 2 Sensor 1

67

BK

450

Ground

68

PU/WH

1668

Heated Oxygen Sensor High Signal Bank 1 Sensor 2

69

PU/WH

1665

Heated Oxygen Sensor High Signal Bank 1 Sensor 1

70-71

--

--

Not Used

72

YE

772

Transmission Position Switch Bit 2 Signal

73

BN/WH

633

Camshaft Position Sensor Signal

74

YE

410

Engine Coolant Temperature Sensor Signal

75

PK

1020

Off/Run/Crank Voltage

76

BK/WH

845

Fuel Injector Control 5

77

D-BU/WH

878

Fuel Injector Control 8

78

--

--

Not Used

79

WH

687

3-2 Shift Solenoid Valve Control

80

GY

720

Sensor Low Reference

Powertrain Control Module C2


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

450

Ground

2

BN

418

Torque Converter Clutch PWM Solenoid Control

3-4

--

--

Not Used

5

TN/BK

464

Delivered Torque Signal

6

RD/BK

1228

Transmission Force Motor Supply Voltage 1

7

--

--

Not Used

8

L-BU/WH

1229

Transmission Force Motor Low Reference 1

9

D-GN/WH

465

Fuel Pump Primary Relay Control

10

WH

121

Engine Speed Signal

11-13

--

--

Not Used

14

RD/BK

380

A/C Refrigerant Pressure Sensor Signal

15

RD

225

Generator Turn On Signal

16-17

GY/BK

1694

Four Wheel Drive Low Signal

18

D-GN

1433

Clutch Start Switch Signal

19

--

--

Not Used

20

L-GN/BK

822

Vehicle Speed Sensor Low Reference

21

PU/WH

821

Vehicle Speed Sensor Signal

22-24

--

--

Not Used

25

TN

472

Intake Air Temperature Sensor Signal

26

PU

2121

Ignition Control 1

27

RD

2127

Ignition Control 7

28

L-BU/WH

2126

Ignition Control 6

29

D-GN/WH

2124

Ignition Control 4

30

--

--

Not Used

31

YE

492

Mass Air Flow Sensor Signal

32

L-GN

432

Manifold Absolute Pressure Sensor Signal

33

D-BU

473

High Speed Cooling Fan Relay Control

34

D-GN/WH

428

EVAP Canister Purge Solenoid Control

35-38

--

--

Not Used

39

RD

631

Camshaft Sensor 12-Volt Reference

40

BK

450

Ground

41

--

--

Not Used

42

TN/BK

422

Torque Converter Clutch Solenoid Control

43

D-GN/WH

459

A/C Compressor Clutch Relay Control

44

--

--

Not Used

45

WH

1310

EVAP Canister Vent Solenoid Control

46

BN/WH

419

Check Engine Indicator Control

47

YE/BK

1223

2 Shift Solenoid Valve Control

48

D-GN

1222

1 Shift Solenoid Valve Control

49

YE/BK

1827

Vehicle Speed Signal

50

D-GN/WH

817

Vehicle Speed Signal

51

YE/BK

1227

Transmission Temperature Sensor Signal

52

BN

2391

HO2S Heater Low Control Bank 1 Sensor 2

53

RD/WH

3223

Heated Oxygen Sensor Heater Low Control Bank 2 Sensor 2

54

PU/WH

1589

Primary Fuel Level Sensor Signal

55-56

--

--

Not Used

57

BK

2760

Intake Air Temperature Sensor Low Reference

58

TN/WH

332

Oil Pressure Sensor Signal

59

PU

806

Crank Voltage

60

BN

2129

Ignition Control Low Reference Bank 1

61

BN/WH

2130

Ignition Control Low Reference Bank 2

62

GY

773

Transmission Position Switch Bit 3 Signal

63

PK

1224

Transmission Fluid Pressure Switch Signal Bit 1

64

D-GN

890

Fuel Tank Pressure Sensor Signal

65

--

--

Not Used

66

PU

2128

Ignition Control 8

67

RD/WH

2122

Ignition Control 2

68

D-GN

2125

Ignition Control 5

69

L-BU

2123

Ignition Control 3

70-71

--

--

Not Used

72

BK/WH

3113

Heated Oxygen Sensor Heater Low Control Bank 1 Sensor 1

73

--

--

Not Used

74

L-GN

3212

Heated Oxygen Sensor Heater Low Control Bank 2 Sensor 1

75

GY

23

Generator Field Duty Cycle Signal

76-79

--

--

Not Used

80

BK

2751

Signal Ground