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

Powertrain Control Module Connector C1 End View


Object Number: 15026  Size: CF

Connector Part Information

    • Blue PCM Connector C1
    • 80 Pin Connector

Pin

Wire Color

Circuit No.

Function

1

BLK

2762

Trans Fluid Temp Sensor Signal Ground

2

--

--

Not Used

3

ORN

55

Fuel Level Output Control Circuit

4

LT GRN

1222

Shift Solenoid A Control (1-2 Shift Soleniod 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

18X Reference

10

GRA

2704

Map Sensor 5V Reference

11

--

--

Not Used

12

BLK

2761

Engine Coolant Temp Sensor Reference Low

13

ORN/BLK

469

Map Sensor Reference Low

14

--

--

Not Used

15

TAN

800

Serial Data (UART)

16

BLK/WHT

451

PCM Ground

17

BLK

2760

ECT Sensor Ground

18

--

--

Not Used

19

PNK

439

Ignition Positive Voltage

20

ORN

540

Battery Positive Voltage

21

--

--

Not Used

22

PNK

1224

Transmission Fluid Pressure Switch A Input

23-27

--

--

Not Used

28

TAN/WHT

1669

HO2S Sensor 2 Signal Low

29

TAN

413

HO2S Sensor 1 Signal Low

30

PPL

420

TCC Brake Switch Input

31

BLK

2753

EGR Pintle Position Sensor Ground

32

RED

1676

EGR Valve Ignition Positive Voltage

33

DK BLU

496

Bank 1 KS Signal

34

LT BLU

1876

Bank 2 KS Signal

35

--

--

Not Used

36

BRN

25

Charge Warning Indicator Control

37

--

--

Not Used

38

LT GRN/WHT

1749

IAC Valve B High

39

LT GRN

497

Fuel Pump Speed Control (VIN 1 Only)

40-42

--

--

Not Used

43

YEL/BLK

846

Fuel Injector #6 Control

44

YEL/BLK

1223

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

45

PNK/BLK

429

A.I.R Control Solenoid Ground (VIN K Only)

46

LT BLU/BLK

844

Fuel Injector #4 Control

47

BLK/WHT

845

Fuel Injector #5 Control

48

RED/BLK

453

Reference Low

49-52

--

--

Not Used

53

TAN/BLK

424

Bypass Control

54

WHT

423

Ignition Control (IC)

55

DK GRN

389

Vehicle Speed Signal Output

56

BLK/WHT

451

PCM Ground

57

BLK/WHT

451

PCM Ground

58

--

--

Not Used

59

PPL

1807

Class 2 Serial Data

60

BLK/WHT

451

PCM Ground

61

BLK

2752

Throttle Position (TP) Ground

62

DK BLU/WHT

1231

Automatic Transmission Input (Shaft) Speed Sensor (AT ISS Sensor) Low

63

RED/BLK

1230

Automatic Transmission Input (Shaft) Speed Sensor (AT ISS Sensor) High

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

DK BLU

229

Theft Deterrent Fuel Enable

71

ORN/BLK

463

Traction Control Desired Torque Input (VIN 1 Only)

72

DK GRN

83

Cruise Disable/Inhibit Control

73

LT GRN/BLK

1745

Fuel Injector #2 Control

74

--

--

Not Used

75

DK GRN

35

Engine Hot Lamp Control

76

DK GRN/WHT

428

EVAP Canister Purge Control

77-78

--

--

Not Used

79

BLK

1744

Fuel Injector #1 Control

80

BLK

2751

A/C Pressure Sensor Reference Low

Powertrain Control Module Connector C2 End View


Object Number: 15030  Size: CF

Connector Part Information

    • Clear PCM Connector C2
    • 80 Pin Connector

Pin

Wire Color

Circuit No.

Function

1

--

--

--

2

WHT

1310

EVAP Canister Vent Valve Solenoid Control

3

DK GRN/WHT

465

Fuel Pump Relay Control

4

GRY

435

EGR Valve Control

5

BRN/WHT

419

MIL Control

6

BRN/WHT

1173

Low Oil Lamp Control

7

LT BLU/WHT

1747

IAC Valve A High

8

WHT

121

Tachometer Control

9

TAN/BLK

464

Traction Control Delivered Torque Control (VIN 1 Only)

10

PPL

412

HO2S Sensor 1 Signal High

11

PPL/WHT

1668

HO2S Sensor 2 Signal High

12-15

--

--

Not Used

16

WHT

776

Transaxle Range Switch P

17

RED

1226

Transmission Fluid Pressure Switch C

18

BLK/WHT

771

Transaxle Range Switch A

19-20

--

--

Not Used

21

DK BLU

1493

Normal / Performance Switch Input (VIN 1 Only)

22

DK GRN/WHT

762

A/C Request

23-24

--

--

Not Used

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

--

--

Not Used

30

GRA

2702

EGR Valve 5V Reference Signal

31-32

--

--

Not Used

33

GRA

2701

5 Volt Reference A

34

GRA

2700

5 Volt Reference B

35

BLK

2759

Sensor Ground

36

GRA

803

Change Oil Lamp Control

37-38

--

--

Not Used

39

DK GRN/WHT

459

A/C Compressor Clutch Relay Control

40-41

--

--

Not Used

42

PNK/BLK

1746

Fuel Injector #3 Control

43

--

--

--

44

LT BLU/BLK

1748

IAC Valve A Low

45

RED/BLK

1228

Pressure Control Solenoid High

46

LT BLU/WHT

1229

Pressure Control Solenoid Low

47-48

--

--

Not Used

49

LT GRN/BLK

444

IAC Valve B Low

50

TAN

472

Intake Air Temperature (IAT) Sensor

51-54

--

--

Not Used

55

DK GRN

890

Fuel Tank Pressure Sensor Signal

56

GRA

773

Transaxle Range Switch C

57

DK BLU

1225

Transmission Fluid Pressure Switch B

58

BRN

1174

Engine Oil Level Switch Input

59

WHT

85

Cruise Status

60

--

--

Not Used

61

RED

225

Generator L Terminal Control

62

--

--

Not Used

63

YEL

657

Transaxle TCC Release Switch Input

64-65

--

--

Not Used

66

DK BLU

417

Throttle Position (TP) Sensor Signal

67

--

--

Not Used

68

YEL/BLK

1227

Transaxle Fluid Temperature (TFT) Sensor Signal

69

PPL

1589

Fuel Level Sensor Input

70-74

--

--

Not Used

75

BRN

--

A.I.R Pump Relay Ground (VIN K only)

76

--

--

Not Used

77

GRA

1724

Boost Control Solenoid Control Circuit (VIN 1 Only)

78

BRN

418

TCC PWM Solenoid Control

79-80

--

--

Not Used