GM Service Manual Online
For 1990-2009 cars only
Table 1: PCM Connector C1
Table 2: PCM Connector C2

PCM Connector C1


Object Number: 15026  Size: CF

Connector Part Information

    • Complete Assembly (W/O TPA) - 12160956
    • TPA - 12191318 (BLU)
    • Terminal - 12084913

Pin

Wire Color

Circuit No.

Function

1

BLK

808

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

ORN

1799

High Resolution Signal

8

LT BLU/WHT

1800

CKP Sensor 2 Signal

9

YEL

573

CKP Sensor 1 Signal

10

GRY

605

5 Volt Reference

11

--

--

Not Used

12

BLK

470

Low Reference

13

ORN/BLK

469

Low Reference

14-15

--

--

Not Used

16

BLK/WHT

1551

Ground

17

RED/BLK

645

Low Reference

18

--

--

Not Used

19

WHT

1390

Off/Run/Crank Voltage

20

ORN

240

Battery Positive Voltage

21

--

--

Not Used

22

PNK

1224

Transmission Fluid Pressure Switch Signal A

23-27

--

--

Not Used

28

BLK

808

Low Reference

29

BLK

808

Low Reference

30

PPL

420

TCC Brake Switch Signal

31

BLK

552

Low Reference

32

GRY

435

EGR Solenoid 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

YEL/BLK

846

Fuel Injector 6 Control

44

YEL/BLK

1223

2-3 Shift Solenoid Valve Control

45

PNK/BLK

429

AIR Solenoid Control

46

LT GRN/BLK

1745

Fuel Injector 2 Control

47

BLK

1744

Fuel Injector 1 Control

48

RED/BLK

453

Low Reference

49

PPL

2121

IC 1 Control

50

RED/WHT

2122

IC 2 Control

51

LT BLU/WHT

2126

IC 6 Control

52

DK GRN

2125

IC 5 Control

53

DK GRN/WHT

2124

IC 4 Control

54

LT BLU

2123

IC 3 Control

55

DK GRN/WHT

817

Vehicle Speed Signal

56

BLK/WHT

1551

Ground

57

BLK/WHT

1551

Ground

58

PPL

1807

Class 2 Serial Data (Primary)

59

PPL

1807

Class 2 Serial Data (Primary)

60

BLK/WHT

1551

Ground

61

BLK

452

Low Reference

62

DK BLU/WHT

1231

AT ISS Low Signal

63

RED/BLK

1230

AT ISS High Signal

64

YEL

400

Signal High - Front

65

PPL

401

Signal Low - Front

66-67

--

--

Not Used

68

YEL

772

Transmission Range Switch Signal B

69

YEL

492

MAF Sensor Signal

70

--

--

Not Used

71

ORN/BLK

463

Requested Torque Signal

72

DK GRN

83

Cruise Control Inhibit Signal

73

LT BLU/BLK

844

Fuel Injector 4 Control

74-75

--

--

Not Used

76

DK GRN/WHT

428

EVAP Canister Purge Solenoid Control

77-78

--

--

Not Used

79

BLK/WHT

845

Fuel Injector 5 Control

80

BLK

808

Low Reference

PCM Connector C2


Object Number: 15030  Size: CF

Connector Part Information

    • Complete Assembly (W/O TPA) - 12160548
    • TPA - 12191319 (CLR)
    • Terminal - 12084913

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

WHT

257

EGR Solenoid Control

5

BRN/WHT

419

MIL Control

6

--

--

Not Used

7

LT BLU/WHT

1747

IAC Coil A High Control

8

WHT

121

Engine Speed Signal

9

TAN/BLK

464

Delivered Torque Signal

10

PPL

412

HO2S Low Signal Sensor 1

11

PPL

1670

HO2S High Signal Bank 2 Sensor 2

12-15

--

--

Not Used

16

WHT

776

Transmission Range Switch Signal P

17

RED

1226

Transmission Fluid Pressure Switch Signal C

18

BLK/WHT

771

Transmission Range Switch Signal A

19-22

--

--

Not Used

23

YEL

5

Crank Voltage

24

PNK

39

Ignition 1 Voltage

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 Valve Position Signal

29

GRY

23

Generator Field Duty Cycle Signal

30

GRY

605

5 Volt Reference

31

ORN

240

Battery Positive Voltage

32

GRY

605

5 Volt Reference

33

GRY

605

5 Volt Reference

34

GRY

474

5 Volt Reference

35

BLK

808

Low Reference

36

--

--

Not Used

37

BLK/WHT

3112

HO2S Heater Low Control Sensor 1

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

--

--

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

--

--

Not Used

48

BLK/WHT

1423

HO2S Heater Low Control Bank 1 Sensor 2

49

LT GRN/BLK

444

IAC Coil B Low Control

50

TAN

472

IAT Sensor Signal

51-52

--

--

Not Used

53

TAN/WHT

331

Engine Oil Pressure Sensor Signal

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 Signal

59

LT BLU/BLK

396

Cruise Control Engaged Signal

60

GRY

847

Extended Travel Brake Switch Signal

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 Signal - Primary

70

RED

631

12 Volt Reference

71

RED/BLK

631

12 Volt Reference

72

RED

631

12 Volt Reference

73

PNK/BLK

632

Low Reference

74

PNK/BLK

632

Low Reference

75

BRN

436

AIR Pump Relay Control

76

YEL

447

Starter Relay Coil Control

77

--

--

Not Used

78

BRN

418

TCC PWM Solenoid Valve Control

79

--

--

Not Used

80

PNK

632

Low Reference