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 (Blue) - 12191318
    • Terminal - 12084913

Pin

Wire Color

Circuit No.

Function

1-4

--

--

Not Used

5

DK BLU / WHT

1231

Transaxle Input Speed Sensor Input (Lo)

6

RED /WHT

1230

Transaxle Input Speed Sensor Input (Hi)

7

BLK

808

Sensor Ground

8

LT GRN / BLK

444

IAC

9

LT BLU / BLK

1748

IAC

10

LT BLU / WHT

1747

IAC

11

LT GRN / WHT

1749

IAC

12

BLK

808

TP Sensor Return

13

YEL

1227

Transaxle Oil Temperature Sensor

14, 15

--

--

Not Used

16

GRY

120

Fuel Pump Feedback

17

BLK

808

ECT Sensor Return

18

LT GRN

147

PCM Ignition 0 Feed

19

PNK

639

PCM Ignition 1 Feed

20

ORN

2240

PCM Battery Feed

21

BLK / WHT

451

PCM Ground

22

TAN / BLK

422

TCC Solenoid Control

23

LT GRN

1222

Shift A Solenoid Control

24

PPL

1490

Lift/Dive Signal Output

25

--

--

Not Used

26

DK GRN

83

Cruise Inhibit Output

27

DK GRN / WHT

459

A/C Compressor Clutch Relay Control

28

YEL / BLK

1223

Shift B Solenoid Control

29

RED

1226

Transaxle Pressure Switch C input

30

DK BLU

1225

Transaxle Pressure Switch B Input

31

PNK

1224

Transaxle Pressure Switch A Input

32

WHT

776

Transaxle Range Switch Parity Input

33

GRY

773

Transaxle Range Switch C Input

34

YEL

772

Transaxle Range Switch B Input

35

ORN / BLK

495

Power Steering Pressure Switch Input

36

PPL

420

TCC Brake Switch Input

37

RED / BLK

1228

Transaxle Pressure Control Solenoid

38

LT BLU / WHT

1229

Transaxle Pressure Control Solenoid

39-45

--

--

Not Used

46

ORN/BLK

469

Map Sensor Return

47

PPL / WHT

1668

Post-Converter HO2S Input (Hi)

48

TAN / WHT

1669

Post-Converter HO2S Input (Lo)

49, 50

--

--

Not Used

51

BLK

808

EVAP Fuel Tank Pressure Sensor Return

52, 53

--

--

Not Used

54

GRY

23

Generator F Terminal Feedback

55-57

--

--

Not Used

58

PPL

1807

Class 2 Data Line

59

PPL

1807

Class 2 Data Line

60

BLK / WHT

451

PCM Ground

61

ORN

2240

PCM Battery Feed

62

GRY

605

EGR Position Sensor 5 Volt Feed

63

GRY

605

TP Sensor 5 Volt Feed

64

GRY

474

MAP Sensor 5 Volt Feed

65

--

--

Not Used

66

GRY

605

EVAP Fuel Tank Pressure Sensor 5 Volt Feed

67

--

--

Not Used

68

DK BLU

417

TP Sensor Input

69

LT GRN

432

MAP Sensor Input

70

--

--

Not Used

71

BLK

452

IAT Sensor Return

72

BLK

452

Trans Temp Sensor Return

73

--

--

Not Used

74

BLK/WHT

771

Trans Range Switch A Input

75

--

--

Not Used

76

GRY

847

Extended Travel Brake Switch Input

77

LT BLU / BLK

396

Cruise Engaged Input

78-80

--

--

Not Used

PCM Connector C2


Object Number: 15030  Size: CF

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

1-3

--

--

Not Used

4

BLK

630

CAM Hi Input

5

LT BLU / BLK

647

24X Reference Hi Input

6

--

--

Not Used

7

YEL

400

VSS Sensor Input Hi

8

PPL

401

VSS Sensor Input Lo

9

BLK

1744

Fuel Injector 1 Control

10

LT GRN / BLK

1745

Fuel Injector 2 Control

11

RED / BLK

877

Fuel Injector 7 Control

12

PNK / BLK

1746

Fuel Injector 3 Control

13

LT BLU / BLK

844

Fuel Injector 4 Control

14-16

--

--

Not Used

17

BLK / WHT

845

Fuel Injector 5 Control

18

YEL / BLK

846

Fuel Injector 6 Control

19-20

--

--

Not Used

21

BLK / WHT

451

PCM Ground

22

DK BLU / WHT

878

Fuel Injector 8 Control

23

--

--

Not Used

24

DK GRN / WHT

428

EVAP Control Solenoid Control

25

DK GRN / WHT

817

Vehicle Speed Output (4000 Pules Per Mile)

26

BRN / WHT

419

SES MIL Control

27

TAN / BLK

464

Delivered Torque Output

28

WHT

121

Tachometer Output

29

WHT

1310

EVAP Vent Valve Control

30, 31

--

--

Not Used

32

DK GRN

335

Coolant Fan Low

33

DK BLU

473

Coolant fan high

34

PNK / BLK

839

EGR Valve Control Ignition Feed

35

GRY

435

EGR Valve Control

36

DK GRN / WHT

465

Fuel Pump Control

37

PNK

639

PCM Ignition 1 Feed

38-43

--

--

Not Used

44

PPL / WHT

430

4X Reference Hi Input

45

YEL

492

MAF Sensor Input

46

ORN / BLK

463

Desired Torque Input

47

--

--

Not Used

48

RED / BLK

453

Reference Lo Input

49

WHT

423

Ignition Control Feedback

50

--

--

Not Used

51

TAN / BLK

424

Bypass Spark Output

52, 56

--

--

Not Used

57

TAN/BLK

231

Oil Pressure Switch Input

58

BRN

1174

Oil Level Switch Input

59

--

--

Not Used

60

BLK / WHT

451

PCM Ground

61

--

--

Not Used

62

DK BLU

496

Knock Sensor Input

63-64

--

--

Not Used

65

TAN

1667

Rear Bank HO2S Input (Lo)

66

PPL

1666

Rear Bank HO2S Input (Hi)

67

WHT

1665

Pre-Converter HO2S Input (Hi)

Early production vehicles only

68

WHT

1653

Pre-Converter HO2S Input (Lo)

Early production vehicles only

69

PPL

412

Front Bank HO2S Input (Hi)

70

TAN

413

Front Bank HO2S Input (Lo)

71-73

--

--

Not Used

74

YEL

410

ECT Sensor Input

75

DK GRN

890

EVAP Fuel Tank Pressure Sensor Input

76

TAN

472

IAT Sensor Input

77

BRN

1456

EGR Valve Feedback

78-80

--

--

Not Used