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 C1 (Blue) Part Information

Bolt - 1260553

Bolt Retainer - 12004737

Seal - 12160554

TPA (Blue) - 12176408

Dress Cover (Gray) - 12191108

Strain Relief (Black) - 12191109

Terminal - 12084913

Connector Body - 12182654

Complete Assembly (W/O TPA) - 12160549

Pin

Connector C1 Pin Function

Ckt No.

Wire Color

Component Connector Cavity

1

Not Used

--

--

--

2

Not Used

--

--

--

3

Not Used

--

--

--

4

Not Used

--

--

--

5

Transaxle Input Speed Sensor Input (Lo)

1231

Dk Blu / Wht

C

6

Transaxle Input Speed Sensor Input (Hi)

1230

Red / Blk

A

7

Sensor Ground

808

Blk

ECT-A, TP/EGR-B

8

IAC

444

Lt Grn / Blk

A

9

IAC

1748

Lt Blu / Blk

C

10

IAC

1747

Lt Blu / Wht

D

11

IAC

1749

Lt Grn / Wht

B

12

Not Used

--

--

--

13

Transaxle Oil Temperature Sensor

585

Brn

M

14

A/C High Temperature Sensor

732

Dk Blu

A

15

UART

800

Tan

--

16

Fuel Pump Feedback

120

Gry

87

17

Not Used

--

--

--

18

PCM Ignition 1 Feed

439

Pnk

Ign 1 Fuse

19

PCM Ignition 1 Feed

439

Pnk

Ign 1 Fuse

20

PCM Battery Feed

1642

Red

Batt Fuse

21

PCM Ground

451

Blk / Wht

G100

22

TCC Solenoid Control

422

Tan / Blk

T

23

Shift A Solenoid Control

1222

Lt Grn

A

24

Not Used

--

--

--

25

Not Used

--

--

--

26

Cruise Inhibit Output

83

Dk Grn

H

27

A/C Compressor Clutch Relay Control

459

Dk Grn / Wht

86

28

Shift B Solenoid Control

1223

Yel / Blk

B

29

Transaxle pressure switch input

1226

Red

P

30

Transaxle Pressure Switch Input

1225

Dk Blu

R

31

Transaxle Pressure Switch Input

1224

Pnk

N

32

Transaxle Range Switch Input

434

Orn / Blk

A

33

Not Used

--

--

--

34

A/C Compressor High Pressure Switch

604

Dk Blu

A

35

Power Steering Pressure Switch Input

495

Orn / Blk

A

36

TCC Brake Switch Input

420

Ppl

D

37

Transaxle Pressure Control Solenoid

1228

Red / Blk

C

38

Transaxle Pressure Control Solenoid

1229

Lt Blu / Wht

D

39

Not Used

--

--

--

40

Not Used

--

--

--

41

Not Used

--

--

--

42

Not Used

--

--

--

43

Not Used

--

--

--

44

Not Used

--

--

--

45

Not Used

--

--

--

46

MAP Sensor Return

452

Blk

A

47

Post-Converter HO2S Input (Hi)

1668

Ppl / Wht

B

48

Post-Converter HO2S Input (Lo)

1669

Tan / Wht

A

49

A/C High Temperature Sensor Return

1704

Blk / Wht

B

50

Not Used

--

--

--

51

Not Used

--

--

--

52

A/C Low Temperature Sensor Input

731

Gra

A

53

PASS-Key®II Module

229

Dk Blu

--

54

Generator F Terminal Feedback

23

Gra

F

55

Not Used

--

--

--

56

Not Used

--

--

--

57

Not Used

--

--

--

58

Not Used

--

--

--

59

Class 2 Data Line

1807

Ppl

2

60

PCM Ground

451

Blk / Wht

G100

61

PCM Battery Feed

1642

Red

Batt Fuse

62

EGR Position Sensor 5 Volt Feed

1688

Lt Blu / Blk

D

63

Not Used

--

--

--

64

MAP Sensor 5 Volt Feed

474

Gra

C

65

Not Used

--

--

--

66

Not Used

--

--

--

67

Not Used

--

--

--

68

TP Sensor Input

417

Dk Blu

C

69

MAP Sensor Input

432

Lt Grn

B

70

Not Used

--

--

--

71

IAT Sensor Return

407

Blk

B

72

Not Used

--

--

--

73

A/C Low Temperature Sensor Return

470

Blk

B

74

Trans Shift Select

1493

Dk Blu

A

75

Generator L Terminal Feedback

225

Red

L

76

A/C Request

603

Dk Grn

B

77

Cruise Engaged Input

396

Lt Blu / Blk

J

78

Not Used

--

--

--

79

Not Used

--

--

--

80

Not Used

--

--

--

PCM Connector C2


Object Number: 15030  Size: CF

Connector C2 (Clear) Part Information

Bolt - 1260553

Bolt Retainer - 12004737

Seal - 12160554

TPA (Clear) - 12176409

Dress Cover (Gray) - 12191108

Strain Relief (Black) - 12191109

Terminal - 12084913

Connector Body - 12182654

Complete Assembly (W/O TPA) - 12160549

Pin

Connector C2 Pin Function

CKT No

Wire Color

Component Connector Cavity

1

Not Used

--

--

--

2

Not Used

--

--

--

3

Not Used

--

--

--

4

CAM Hi Input

630

Blk

B

5

24X Reference Hi Input

647

Lt Blu / Blk

A

6

Not Used

--

--

--

7

VSS Sensor Input Hi

400

Yel

A

8

VSS Sensor Input Lo

401

PPL

B

9

Fuel Injector 1 Control

1744

Blk

B

10

Fuel Injector 2 Control

1745

Lt Grn / Blk

B

11

Fuel Injector 7 Control

877

Red / Blk

B

12

Fuel Injector 3 Control

1746

Pnk / Blk

B

13

Fuel Injector 4 Control

844

Lt Blu / Blk

B

14

Not Used

--

--

--

15

Not Used

--

--

--

16

Not Used

--

--

--

17

Fuel Injector 5 Control

845

Blk / Wht

B

18

Fuel Injector 6 Control

846

Yel / Blk

B

19

Not Used

--

--

--

20

Not Used

--

--

--

21

PCM Ground

451

Blk / Wht

G100

22

Fuel Injector 8 Control

878

Dk Blu / Wht

B

23

Not Used

--

--

--

24

EVAP Control Solenoid Control

428

Dk Grn / Wht

B

25

Vehicle Speed Output (4000 Pules Per Mile)

817

Dk Grn / Wht

SMCC-K

I/P-A1

26

SES MIL Control

419

Brn / Wht

B1

27

Delivered Torque Output

464

Tan / Blk

6

28

Not Used

--

--

--

29

Not Used

--

--

--

30

Not Used

--

--

--

31

PASS-Key®II Module Start Inhibit

1433

Dk Grn

A7

32

Coolant Fan Low

335

Dk Grn

86

33

Coolant fan high

473

Dk Blu

86

34

EGR Valve Control Ignition Feed

639

Pnk

E

35

EGR Valve Control

435

Gra

A

36

Fuel Pump Control

465

Dk Grn / Wht

85

37

PCM Ignition 1 Feed

439

Pnk

Ign 1 Fuse

38

Not Used

--

--

--

39

Not Used

--

--

--

40

Not Used

--

--

--

41

Not Used

--

--

--

42

Not Used

--

--

--

43

Not Used

--

--

--

44

4X Reference Hi Input

430

Ppl / Wht

C

45

MAF Sensor Input

492

Yel

A

46

Desired Torque Input

463

Orn / Blk

24

47

Not Used

--

--

--

48

Reference Lo Input

453

Red / Blk

F

49

Ignition Control Feedback

423

Wht

E

50

Not Used

--

--

--

51

Bypass Spark Output

424

Tan / Blk

D

52

Not Used

--

--

--

53

Not Used

--

--

--

54

Not Used

--

--

--

55

EVAP Vacuum Switch Input

1986

Ppl

A

56

Low Coolant Switch Input

1478

Lt Grn

A

57

Not Used

--

--

--

58

Oil Level Switch Input

1174

Brn

C

59

Not Used

--

--

--

60

PCM Ground

451

Blk / Wht

G100

61

Not Used

--

--

--

62

Knock Sensor Input

496

Dk Blu

A

63

Not Used

--

--

--

64

Not Used

--

--

--

65

Rear HO2S Input (Lo)

1667

Tan

A

66

Rear HO2S Input (Hi)

1666

Ppl

B

67

Pre-Converter HO2S Input (Hi)

1665

Ppl / Wht

B

68

Pre-Converter HO2S Input (Lo)

1653

Tan / Wht

A

69

Front HO2S Input (Hi)

412

Ppl

B

70

Front HO2S Input (Lo)

413

Tan

A

71

Not Used

--

--

--

72

Not Used

--

--

--

73

Not Used

--

--

--

74

ECT Sensor Input

410

Yel

B

75

Not Used

--

--

--

76

IAT Sensor Input

472

Tan

A

77

EGR Valve Feedback

1456

Brn

C

78

Not Used

--

--

--

79

Not Used

--

--

--

80

Not Used

--

--

--