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

PCM Connector C1


Object Number: 23346  Size: CF

Connector Part Information

    • PCM Connector C1 92231110
    • 80-Way Micro-Pack 100W Series Sealed (BU)

Pin

Wire Color

Circuit No.

Function

1

BK/RD

450

Ground

2

L-BU/WH

2867

12-Volt Reference - CKP Sensor

3

PU

1746

Fuel Injector 3 Control

4

GN

1745

Fuel Injector 2 Control

5-6

--

--

Not Used

7

BU/YE

596

5-Volt Reference - EOP Sensor

8

GY

2701

5-Volt Reference - TP Sensor

9-10

--

--

Not Used

11

L-BU

1876

KS 2 Signal

12

L-BU

573

CKP Sensor Signal

13-16

--

--

Not Used

17

YE

1225

Transmission Fluid Pressure Switch Signal B

18

GY

1226

Transmission Fluid Pressure Switch Signal C

19

OG

300

Ignition 3 Voltage

20

OG

740

Battery Positive Voltage

21

L-BU/BK

574

Low Reference - CKP Sensor

22

--

--

Not Used

23

BK

2759

Low Reference - FTP Sensor and Fuel Level Sensor

24

BK/RD

450

Ground

25

TN

1671

HO2S Low Signal Bank 2 Sensor 2

26

GY/BK

1667

HO2S Low Signal Bank 2 Sensor 1

27

BK/RD

450

Ground

28

TN/WH

1669

HO2S Low Signal Bank 1 Sensor 2

29

BU/BK

1664

HO2S Low Signal Bank 1 Sensor 1

30

GN

68

Engine Coolant Level Signal

31

--

--

Not Used

32

BU/WH

771

Transmission Range Switch Signal A

33

BN

86

Cruise Control Release Signal

34

WH

776

Transmission Range Switch Signal P

35

--

--

Not Used

36

BU

1744

Fuel Injector 1 Control

37

YE

846

Fuel Injector 6 Control

38-39

--

--

Not Used

40

BK/RD

450

Ground

41-42

--

--

Not Used

43

PK/BK

877

Fuel Injector 7 Control

44

BN/YE

844

Fuel Injector 4 Control

45

PU/WH

2700

5-Volt Reference - A/C Refrigerant Pressure Sensor

46

GY

2709

5-Volt Reference - FTP Sensor

47

--

--

Not Used

48

PU/WH

2704

5-Volt Reference - MAP Sensor

49-50

--

--

Not Used

51

BU

496

KS 1 Signal

52

--

--

Not Used

53

BK/WH

2762

Low Reference - TFT Sensor

54

BK

469

Low Reference - MAP Sensor

55-56

--

--

Not Used

57

OG

740

Battery Positive Voltage

58

YE

1045

RFA Class 2 Serial Data

59

--

--

Not Used

60

BK/YE

2752

Low Reference - TP Sensor

61

RD/WH

632

Low Reference - CMP Sensor

62

--

--

Not Used

63

GN

470

Low Reference - EOP Sensor

64

BK/RD

450

Ground

65

PU/BK

1670

HO2S High Signal Bank 2 Sensor 2

66

GY

1666

HO2S High Signal Bank 2 Sensor 1

67

BK/RD

450

Ground

68

PU/WH

1668

HO2S High Signal Bank 1 Sensor 2

69

PU

1665

HO2S High Signal Bank 1 Sensor 1

70-71

--

--

Not Used

72

YE/RD

772

Transmission Range Switch Signal B

73

BN

633

Camshaft Position Signal

74

YE

410

ECT Sensor Signal

75

--

--

Not Used

76

GY

845

Fuel Injector 5 Control

77

L-GN

878

Fuel Injector 8 Control

78

--

--

Not Used

79

GN/WH or GY

898 or 587

Shift Solenoid Valve 3 High Control - Skip/Shift Solenoid Control

80

GY/BK

2761

Low Reference - ECT Sensor

PCM Connector C2


Object Number: 23346  Size: CF

Connector Part Information

    • PCM Connector C2 92231110
    • 80-Way Micro-Pack 100W Series Sealed (GN)

Pin

Wire Color

Circuit No.

Function

1

BK/RD

450

Ground

2

BN

418

TCC PWM Solenoid Valve Control

3-5

--

--

Not Used

6

RD

1228

PC Solenoid Valve High Control Sol.A

7

--

--

Not Used

8

GY/BU

1229

PC Solenoid Valve Low Control Sol.A

9

GN/WH

465

Fuel Pump Relay Control Primary

10

BN

121

Engine Speed Signal - Tachometer

11

--

--

Not Used

12

GY/BK

1687

Ignition Retard Signal, from EBCM

13

--

--

Not Used

14

GN/BK

380

A/C Refrigerant Pressure Sensor Signal

15-17

--

--

Not Used

18

GN

59

A/C Compressor Clutch Supply Voltage

19

--

--

Not Used

20

TN

1231

AT ISS Low Signal

21

BU/WH

1230

AT ISS High Signal

22-23

--

--

Not Used

24

BU

411

TP Sensor Signal

25

BN

472

IAT Sensor Signal

26

WH

2121

IC 1 Control

27

YE

2127

IC 7 Control

28

L-GN

2126

IC 6 Control

29

WH

2124

IC 4 Control

30

--

--

Not Used

31

BN/WH

492

MAF Sensor Signal

32

L-GN

432

MAP Sensor Signal

33

BU/WH

473

High Speed Cooling Fan Relay Control

34

GN/YE

428

EVAP Canister Purge Solenoid Control

35-38

--

--

Not Used

39

WH/BK

631

12-Volt Reference - CMP Sensor

40

BK/RD

450

Ground

41

--

--

Not Used

42

GY/RD

422

TCC Solenoid Valve Control

43

L-GN/BK

459

A/C Clutch Relay Control

44

YE

1652

Reverse Lock Out Solenoid Control

45

WH

1310

EVAP Canister Vent Solenoid Control

46

BN/WH

419

MIL Control

47

YE/BK

1223

2-3 Shift Solenoid Valve Control

48

L-GN

1222

1-2 Shift Solenoid Valve Control

49

--

--

Not Used

50

PU/WH

5197

VSS Signal

51

YE/BK

1227

TFT Sensor Signal

52

L-BU

1150

HO2S Bank 1 Sensor 2 Heater Control

53

RD/WH

1350

HO2S Bank 2 Sensor 2 Heater Control

54

PU

30

Fuel Level Sensor Signal

55-56

--

--

Not Used

57

GN/OG

5514

Low Reference - IAT Sensor and A/C Refrigerant Pressure Sensor

58

BN/WH

331

Engine Oil Pressure (EOP) Sensor Signal

59

--

--

Not Used

60

BN

2129

Low Reference - Ignition Coils Bank 1

61

PU

2130

Low Reference - Ignition Coils Bank 2

62

GY

773

Transmission Range Switch Signal C

63

BN/YE

1224

Transmission Fluid Pressure Switch Signal A

64

D-GN

890

Fuel Tank Pressure (FTP) Sensor Signal

65

--

--

Not Used

66

L-BU

2128

IC 8 Control

67

YE/BK

2122

IC 2 Control

68

GN

2125

IC 5 Control

69

BU

2123

IC 3 Control

70-71

--

--

Not Used

72

BK/WH

1050

HO2S Bank 1 Sensor 1 Heater Control

73

--

--

Not Used

74

L-GN/RD

1250

HO2S Bank 2 Sensor 1 Heater Control

75

--

--

Not Used

76

L-GN/WH

1749

IAC Coil B High Control

77

L-GN/BK

444

IAC Coil B Low Control

78

L-BU/BK

1748

IAC Coil A Low Control

79

L-BU

1747

IAC Coil A High Control

80

--

--

Not Used