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

    • PCM 80-Way Blue C1 Details
    • TPA (Blue)
        12176408
        Terminal
        12084913
    • Connector Body
        12182654

Pin

Wire Color

Circuit No.

Function

Component Connector Cavity

DTC(s) Affected

1-2

--

--

Not Used

--

--

3

Orn

55

Fuel Gage Control

Instrument Cluster

Refer to Electrical

4

Lt Grn

1222

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

Transaxle Connector A

--

5

Dk Blu

473

High Speed Fans Control

Cooling Fan Relay #2 (85), Cooling Fan Relay #3 (86)

P1652

6

Dk Grn

335

Low Speed Fans Control

Low Speed Cooling Fan Relay #1 (85)

P1651

7

Blk

630

Camshaft Position (CMP) Sensor Signal

CMP B

P0341

8

Ppl/Wht

430

3X Reference High

ICM E

P1374

9

Lt Blu/Blk

647

24X Crankshaft Position (CKP) Sensor Signal

ICM B

P0336

10-14

--

--

Not Used

--

--

15

Tan

800

Serial Data (UART)

DLC 9

--

16

Blk/Wht

451

PCM Ground

Refer to Ground Distribuition in Electrical Diagnosis

--

17

Blk

808

Sensor Ground

A/C, TP, MAP, IAT, ECT Sensor

--

18

--

--

Not Used

--

--

19

Pnk

339

Ignition Positive Voltage

Refer to Fuse Block Details in Electrical Diagnosis

P0560

20

Orn

540

Battery Positive Voltage

Refer to Fuse Block Details in Electrical Diagnosis

P0560

21-27

--

--

Not Used

--

--

28

Tan/Wht

1669

HO2S Sensor 2 Low

HO2S2 A

P0140

29

Tan

413

HO2S Sensor 1 Low

HO2S1 A

P0134

30

Ppl

420

Stop Lamp Switch

Stop Lamp Switch D

--

31

--

--

Not Used

--

--

32

Gry/Blk

435

EGR Valve Control

EGR Valve A

P0403/P0404

33

Dk Blu

496

KS Signal

Knock Sensor

P0327

34-35

--

--

Not Used

--

--

36

Brn/Wht

25

Charge Warning Indicator Control

Instrument Cluster

--

37

--

--

Not Used

--

--

38

Lt Grn/Wht

1749

IAC B High

IAC Valve A

P0506/P0507

39-42

--

--

Not Used

--

--

43

Blk

1744

Fuel Injector #1 Control

Fuel Injector B

P0201/P0300

44

Yel/Blk

1223

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

Transaxle Connector B

Refer to Transaxle Diagnosis

45

--

--

Not Used

--

--

46

Lt Pnk/Blk

1746

Fuel Injector #3 Control

Fuel Injector B

P0203/P0300

47

Lt Grn/Blk

1745

Fuel Injector #2 Control

Fuel Injector B

P0202/P0300

48

Red/Blk

453

3X Ref Low

ICM F

--

49-52

--

--

Not Used

--

--

53

Tan/Blk

424

Bypass

ICM A

P1352/P1361/P1362

54

Wht

423

Ignition Control (IC)

ICM B

P1351/P1361/P1362

55

Dk Grn

389

Vehicle Speed Signal Output

Cruise Control Module K, Refer to Instrument Panel Details

--

56

Blk/Wht

451

PCM Ground

Refer to Ground Distribution in Electrical Diagnosis

--

57

Blk/Wht

451

PCM Ground

Refer to Ground Distribution in Electrical Diagnosis

--

58

--

--

Not Used

--

--

59

Ppl

1807

Class II Data

DLC 2

--

60

Blk / Wht

451

PCM Ground

Refer to Ground Distribution in Electrical Diagnosis

--

61-63

--

--

Not Used

--

--

64

Yel

400

VSS High

VSS B

P0502/P0503

65

Ppl

401

VSS Low

VSS A

P0502/P0503

66-67

--

--

Not Used

--

--

68

Yel

772

Transaxle Range Switch B

Transaxle Range Switch Conector B

P0705/P0706

69

Yel

492

MAF Sensor Signal

MAF Sensor A

P0101/P0102/P0103

70

Dk Blu

229

Theft Deterrent Fuel Enable Signal

Theft Deterrent Module A3

P1626, P1629

71

--

--

Not Used

--

--

72

Dk Grn

83

Cruise Disable/Inhibit Control

Cruise Control Module H

P1662

73

Blk/Wht

845

Fuel Injector #5 Control

Fuel Injector B

P0205/P0300

74-75

--

--

Not Used

--

--

76

Dk Grn/Wht

428

EVAP Canister Purge Valve Control

EVAP Purge Valve B

P0440/P0442/P0446

77-78

--

--

Not Used

--

--

79

Yel/Blk

846

Fuel Injector #6 Control

Fuel Injector B

P0206/P0300

80

--

--

Not Used

--

--

PCM Connector C2


Object Number: 15030  Size: CF

Connector Part Information

    • PCM 80-Way Clear C2 Details
    • TPA (Blue)
        12176408
        Terminal
        12084913
    • Connector Body
        12182654

Pin

Wire Color

Circuit No.

Function

Component Connector Cavity

DTC(s) Affected

1

--

--

Not Used

--

--

2

Wht

1310

EVAP Canister Vent Valve Control

EVAP Canister Vent Valve B

P0440/P1665

3

Dk Grn/Wht

465

Fuel Pump Relay Control

Fuel Pump Relay (85)

P0230

4

Red

1676

EGR Valve Ignition System Voltage

EGR Valve E

P0403/P0404

5

Brn/Wht

419

MIL Control

Refer to Instrument Cluster Details

P01671

6

Brn/Wht

1173

Low Oil Level Indicator Control

Instrument Cluster

--

7

Lt Blu/Wht

1747

IAC A High

IAC Valve C

P0506/P0507

8-9

--

--

Not Used

--

--

10

Ppl

412

HO2S Sensor 1 Signal

HO2S1 B

P0131/P0132/P0134

11

Ppl/Wht

1668

HO2S Sensor 2 Signal

HO2S2 B

P0137/P0138/P0140

12-15

--

--

Not Used

--

--

16

Wht

776

Transaxle Range Switch D

Transaxle Range Switch Connector C2-A

P0705/P0706

17

Red

1226

Transmission Fluid Pressure Switch C

Transmission Connector P

P1810

18

Blk/Wht

771

Transaxle Range Switch A

Transaxle Range Switch Connector C2-D

--

19-21

--

--

Not Used

--

--

22

Lt Grn

66

A/C Request

A/C Control Head C2-A3

--

23-24

--

--

Not Used

--

--

25

Lt Grn

432

MAP Sensor Signal

MAP Sensor B

P0107/P0108/P1106/P1107

26

Yel

410

ECT Sensor Signal

ECT Sensor B

P0117/ P0118/ P1114/ P1115

27

Red/Blk

380

A/C Refrigerant Pressure Sensor Signal

A/C Refrigerant Pressure Sensor C

P0530

28

Brn

1456

EGR Pintle Position Signal

EGR Valve C

P0404/P0405/P1404

29-32

--

--

Not Used

--

--

33

Gry

416

5 Volt Reference A

TP Sensor A, MAP Sensor C, EGR Valve D

P1635/ P0101/ P0121/ P0122/1107/ P1122/ P0404/ P1404

34

Gry

474

5 Volt Reference B

A/C Refrigerant Pressure Sensor B, Fuel Tank Pressure Sensor C

P1639/P0530/P0452/P0453

35

--

--

Not Used

--

--

36

Gry

803

Change Oil Soon Indicator Control Circuit

Instrument Cluster

--

37-38

--

--

Not Used

--

--

39

Dk Grn/Wht

459

A/C Compressor Clutch Relay Control

A/C Compressor Clutch Relay

P1641

40-41

--

--

Not Used

--

--

42

Lt Blu/Blk

844

Fuel Injector #4 Control

Fuel Injector B

P0204/P0300

43

--

--

Not Used

--

--

44

Lt Blu/Blk

1748

IAC Valve A Low

IAC Valve D

P0506/P0507

45-48

--

--

Not Used

--

--

49

Lt Grn/Blk

444

IAC Valve B Low

IAC Valve B

P0506/P0507

50

Tan

472

Intake Air Temperature Sensor

IAT Sensor B

P0112/P0113/P11111/P1112

51-54

--

--

Not Used

--

--

55

Dk Grn

890

Fuel Tank Pressure Sensor Signal

Fuel Tank Pressure Sensor B

P0440/ P0442/ P0446/ P0452/ P0453/ P1441

56

Gry

773

Transaxle Range Switch C

Transaxle Range Switch Connector C

P0705/P0706

57

--

--

Not Used

--

--

58

Brn

1174

Engine Oil Level Switch Input

Engine Oil Level Switch A

--

59

Wht

85

Cruise Status

Cruise Control Module J

P1554

60

--

--

Not Used

--

--

61

Red

225

Generator L Terminal Control

Generator

P0560

62-65

--

--

Not Used

--

--

66

Dk Blu

417

TP Sensor Signal

TP Sensor C

P0121/P0122/P0123/P1122/P1121

67

--

--

Not Used

--

--

68

Yel

1227

Transaxle Fluid Temperature (TFT) Sensor

Transmission Connector F

Refer to Transaxle Diagnosis

69

Ppl

30

Fuel Level Sensor Signal

--

--

70-71

--

--

Not Used

--

--

72

Red/Wht

812

CMP/CKP Sensor Battery Positive Voltage

CMP A, CKP A

--

73

Blk

407

CMP/CKP Sensor Ground

CMP C, CKP C

--

74-77

--

--

Not Used

--

--

78

Brn

418

TCC PWM Solenoid Control

Transmission Connector C

Refer to Transaxle Diagnosis

79

Yel

422

Torque Converter Clutch Solenoid

Trans Connector D

Refer to Transaxle Diagnosis

80

--

--

Not Used

--

--