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: 15026  Size: CF

Connector Part Information

    • 1219111
    •  80-Way F Micro-Pack
    • 100 W Series, Sealed (BLU)

Pin

Wire Color

Circuit No.

Function

1

WHT/BLK

2762

Low Reference

2-3

--

--

Not Used

4

LT GRN

1222

(1-2 Shift Solenoid) Valve Control

5

DK BLU

473

High Speed Cooling Fan Relay Control

6

DK GRN

335

Low Speed Cooling Fan Relay Control

7

BRN/WHT

633

CMP Sensor Signal

8

PPL/WHT

430

Low Resolution Engine Speed Signal

9

LT BLU/BLK

647

Medium Resolution Engine Speed Signal

10

BRN

2704

Volt Reference

11

--

--

Not Used

12

TAN

413

HO2S Low Signal

13

ORN/ BLK

469

Low Reference

14-15

--

--

Not Used

16

BLK/WHT

451

Ground

17

BLK

2760

Low Reference

18

--

--

Not Used

19

PPL

1500

Ignition 0 Voltage

20

ORN

480

Load Management Control

21

--

--

Not Used

22

PNK

1224

Transmission Fluid Pressure Switch Signal A

23-27

--

--

Not Used

28

TAN/WHT

1669

HO2S Low Signal (-Bank 1 Sensor)

29

BLK

808

Low Reference

30

PPL

420

TCC Brake Switch Signal

31

BLK

2753

Low Reference

32

GRY

435

EGR Solenoid Low Control

33

DK BLU

496

KS (1) Signal

34-37

--

--

Not Used

38

LT GRN/WHT

1749

IAC Coil B High Control

39-42

--

--

Not Used

43

BLK

1744

Fuel Injector 1 Control

44

YEL/BLK

1223

(2-3 Shift Solenoid) Valve Control

45

--

--

Not Used

46

PNK/BLK

1746

Fuel Injector 3 Control

47

LT GRN/BLK

1745

Fuel Injector 2 Control

48

RED/BLK

453

Low Reference

49-52

--

--

Not Used

53

TAN/BLK

424

IC Timing Signal

54

WHT

423

IC Timing Control

55

DK GRN/WHT

817

Vehicle Speed Signal

56

BLK/WHT

451

Ground

57

BLK/WHT

451

Ground

58

PPL

1807

Class 2 Serial Data (Primary)

59

--

--

Not Used

60

BLK/WHT

451

Ground

61

BLK

2752

Low Reference

62

DK BLU/WHT

1231

AT ISS Low Signal

63

RED/BLK

1230

ATT ISS High Signal

64

YEL

400

Signal High-Front

65

PPL

401

Signal Low-Front

66-67

--

--

Not Used

68

YEL

772

Transaxle Range Switch Signal B

69

YEL

492

MAF Sensor Signal

70-71

--

--

Not Used

72

DK GRN

83

Cruise Control Inhibit Signal

73

BLK/WHT

845

Fuel Injector 5 Control

74-75

--

--

Not Used

76

DK GRN/WHT

428

EVAP Canister Purge Solenoid Control

77-78

--

--

Not Used

79

YEL/BLK

846

Fuel Injector 6 Control

80

BLK

2751

Low Reference

Powertrain Control Module (PCM), C2


Object Number: 15030  Size: CF

Connector Part Information

    • 12191111
    • 80-Way F Micro-Pack
    • 100 W Series, Sealed (CLR)

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

WHT

1310

EVAP Canister Vent Solenoid Control

3

DK GRN/WHT

465

Fuel Pump Relay Control (-Primary)

4

RED

1676

EGR Solenoid High Control

5

BRN/WHT

419

MIL Control

6

--

--

Not Used

7

LT BLU/WHT

1747

IAC Coil A High Control

8-9

--

--

Not Used

10

PPL

412

HO2S 1 Signal

11

PPL/WHT

1668

HO2S High Signal (Bank 1 Sensor X)

12-15

--

--

Not Used

16

WHT

776

Transaxle Range Switch Signal P

17

RED

1226

Transmission Fluid Pressure Switch Signal C

18

BLK/WHT

771

Transaxle Range Switch Signal A

19

TAN/BLK

231

Oil Pressure Switch Signal

20-23

--

--

Not Used

24

PNK

639

Ignition 1 Voltage

25

LT GRN

432

MAP Sensor Signal

26

YEL

410

ECT Sensor Signal

27

RED/BLK

380

Refrigerant Pressure Sensor Signal

28

BRN

1456

EGR Valve Position Signal

29

GRY

23

Generator Field Duty Cycle Signal

30

BRN/WHT

2702

Volt Reference

31

--

--

Not Used

32

GRY

2709

Volt Reference

33

GRY/BLK

2701

Volt Reference

34

GRY

2700

Volt Reference

35

BLK

2759

Low Reference

36

--

--

Not Used

37

BLK/WHT

3113

HO2S Ground

38

--

--

Not Used

39

DK GRN/WHT

459

A/C Clutch Relay Control

40-41

--

--

Not Used

42

LT BLU/BLK

844

Fuel Injector 4 Control

43

--

--

Not Used

44

LT BLU/BLK

1748

IAC Coil A Low Control

45

RED/BLK

1228

PC Solenoid Valve High Control (Sol. A)

46

LT BLU/WHT

1229

PC Solenoid Valve Low Control (Sol. A)

47-48

--

--

Not Used

49

LT GRN/BLK

444

IAC Coil B Low Control

50

TAN

472

IAT Sensor Signal

51-54

--

--

Not Used

55

DK GRN

890

Fuel Tank Pressure Sensor Signal

56

GRY

773

Transmission Range Switch Signal C

57

DK BLU

1225

Transmission Fluid Pressure Switch Signal B

58

BRN

1174

Oil Level Switch Input Signal

59

LT BLU/BLK

396

Cruise Control Engaged Signal

60

--

--

Not Used

61

RED

225

Generator Turn On Signal

62

--

--

Not Used

63

YEL

657

TCC Release Switch Signal

64-65

--

--

Not Used

66

DK BLU

417

TP Sensor Signal

67

--

--

Not Used

68

YEL/BLK

1227

TFT Sensor Signal

69

PPL

1589

Fuel Level Sensor (-Primary)

70

RED/WHT

812

12 Volt Reference

71

--

--

Not Used

72

RED/WHT

812

12 Volt Reference

73

BLK

407

Low Reference

74

BLK

407

Low Reference

75-77

--

--

Not Used

78

BRN

418

TCC PWM Solenoid Valve Control

79

--

--

Not Used

80

BLK

808

Low Reference