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

Powertrain Control Module (PCM) Connector C1


Object Number: 15026  Size: CF

Connector Part Information

    • BLU PCM C1
    • 80 PIN Connector

Pin

Wire Color

Circuit No.

Function

1

BLK

2762

Transmission Fluid Temperature (TFT) Sensor Ground

2-3

--

--

Not Used

4

LT GRN

1222

Shift Solenoid A Control (1-2 Shift Solenoid Valve)

5

DK BLU

473

High Speed Fans Control

6

DK GRN

335

Low Speed Fans Control

7

BLK

630

Camshaft Position PCM Input

8

PPL/WHT

430

3X Reference

9

LT BLU/BLK

647

24X Reference

10

GRY

2704

Map High

11-12

--

--

Not Used

13

ORN/BLK

469

MAP/ECT Sensor Ground

14-15

--

--

Not Used

16

BLK/WHT

451

PCM Ground

17

BLK

2760

IAT Sensor Ground

18

--

--

Not Used

19

PPL

1500

Ignition Positive Voltage (Hot in Run / Bulb Test / Start)

20

ORN

540

Battery Positive Voltage

21-27

--

--

Not Used

28

--

--

Not Used

29

TAN

413

HO2S Sensor 1 Signal Low

30

PPL

420

TCC Brake Switch Input

31

BLK

2753

EGR Pintle Position Sensor Ground

32

GRY

435

EGR Valve Control

33

DK BLU

496

Knock Sensor (KS) Signal

34-37

--

--

Not Used

38

LT GRN/WHT

1749

IAC Valve B High

39-42

--

--

Not Used

43

BLK

1744

Fuel Injector #1 Control

44

YEL/BLK

1223

Shift Solenoid B Control (2-3 Shift Solenoid Valve)

45

--

--

Not Used

46

PNK/BLK

1746

Fuel Injector #3 Control

47

LT GRN/BLK

1745

Fuel Injector #2 Control

48

RED/BLK

453

Reference Low

49-52

--

--

Not Used

53

TAN/BLK

424

Bypass

54

WHT

423

Ignition Control (IC)

55

--

--

Not Used

56

BLK/WHT

451

PCM Ground

57

BLK/WHT

451

PCM Ground

58

DK GRN

1049

Class II Serial Data

59

--

--

Not Used

60

BLK/WHT

451

PCM Ground

61

BLK

2752

Throttle Position (TP) Ground

62-63

--

--

Not Used

64

YEL

400

VSS High

65

PPL

401

VSS Low

66-67

--

--

Not Used

68

YEL

772

Transaxle Range Switch B

69

YEL

492

MAF Sensor Signal

70-71

--

--

Not Used

72

--

--

Not Used

73

BLK/WHT

845

Fuel Injector #5 Control

74-75

--

--

Not Used

76

DK GRN/WHT

428

EVAP Canister Purge Control

77-78

--

--

Not Used

79

YEL/BLK

846

Fuel Injector #6 Control

80

BLK

2751

AC Pressure Sensor Ground

Powertrain Control Module (PCM) Connector C2


Object Number: 15030  Size: CF

Connector Part Information

    • CLR PCM C2
    • 80 PIN Connector

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

--

--

Not Used

3

DK GRN/WHT

465

Fuel Pump Relay Control

4

WHT

257

EGR Valve Ignition Positive Voltage

5

BRN/WHT

419

MIL Control

6

--

--

Not Used

7

LT BLU/WHT

1747

IAC Valve A High

8-9

--

--

Not Used

10

PPL

412

HO2S Sensor 1 Signal High

11

--

--

Not Used

12-15

--

--

Not Used

16

WHT

776

Transaxle Range Switch P

17

--

--

Not Used

18

BLK/WHT

771

Transaxle Range Switch A

19

TAN/BLK

231

Engine Oil Pressure Switch Input

20-21

--

--

Not Used

22

DK GRN/WHT

762

A/C Request

23

PPL

806

Ignition Positive Voltage (Hot in Start Only)

24

PNK

439

Ignition Positive Voltage (Hot in Run / Bulb Test / Start)

25

LT GRN

432

MAP Sensor Signal

26

YEL

410

ECT Sensor Signal

27

RED/BLK

380

A/C Refrigerant Pressure Sensor Signal

28

BRN

1456

EGR Pintle Position Signal

29

GRY

23

Generator F Terminal Monitor

30

GRY

2702

5 Volt Reference A

31-32

--

--

Not Used

33

GRY

2701

5 Volt Reference A

34

GRY

474

5 Volt Reference B

35

BLK

452

Sensor Ground

36-38

--

--

Not Used

39

DK GRN/WHT

459

A/C Compressor 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 Valve A Low

45-48

--

--

Not Used

49

LT GRN/BLK

444

IAC Valve B Low

50

TAN

472

Intake Air Temperature (IAT) Sensor

51-54

--

--

Not Used

55

--

--

Not Used

56

GRY

773

Transaxle Range Switch C

57

--

--

Not Used

58

BRN

1174

Engine Oil Level Switch Input

59

--

--

Not Used

60

--

--

Not Used

61

RED

225

Generator L Terminal Control

62-65

--

--

Not Used

66

DK BLU

417

Throttle Position (TP) Sensor Signal

67

--

--

Not Used

68

YEL/BLK

1227

Transaxle Fluid Temperature (TFT) Sensor

69

PPL

1589

Fuel Level Sensor Input

70

LT GRN

1867

CKP Battery Positive Voltage

71

--

--

Not Used

72

RED/WHT

812

CMP Sensor Battery Positive Voltage

73

BLK

407

CMP Sensor Ground

74

YEL/BLK

1868

CKP Sensor Ground

75

--

--

Not Used

76

YEL/BLK

625

Starter Enable Control

77

--

--

Not Used

78

BRN

418

TCC PWM Solenoid Control

79

TAN/BLK

422

TCC Solenoid Control

80

--

--

Not Used