GM Service Manual Online
For 1990-2009 cars only

Powertrain Control Module Connector C1 (BLU) End View


Object Number: 15026  Size: CF

Connector Part Information

    • BLU PCM Connector C1
    • 80 Pin Connector

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

PPL/WHT

1572

Service Traction System Indicator Control (4L60E only)

3

--

--

Not Used

4

LT GRN

1222

1 - 2 Shift Solenoid Valve Control (4L60E only)

5

DK BLU

473

High Speed Cooling Fan Relay Control

6

DK GRN

335

Low Speed Cooling Fan Relay Control

7

TAN

630

Camshaft Position Signal

8

PPL/WHT

430

Low Resolution Engine Speed Signal

9

LT BLU/BLK

647

Medium Resolution Engine Speed Signal

10-11

--

--

Not Used

12

BRN

718

Low Reference

13

ORN/BLK

469

Low Reference

14

ORN/BLK

1061

UART Serial Data [Secondary]

15

TAN

800

UART Serial Data [Primary]

16

BLK/WHT

451

Ground

17

PPL

719

Low Reference

18

--

--

Not Used

19

PNK

439

Ignition 1 Voltage

20

ORN

340

Battery Positive Voltage

21

--

--

Not Used

22

PNK

1224

Transmission Range Switch Signal A (4L60E only)

23-26

--

--

Not Used

27

TAN/WHT

1653

HO2S Low Signal [Bank 1 Sensor 1]

28

GRY

1981

HO2S Low Signal [Bank 1 Sensor 2]

29

TAN

1667

HO2S Low Signal [Bank 2 Sensor 1]

30

PPL

420

TCC Brake Switch Signal

31

TAN

552

Low Reference

32

GRY

435

EGR Solenoid Control

33

DK/BLU

496

KS [1] Signal

34

LT/BLU

1876

KS [2] Signal

35-42

--

--

Not Used

43

YEL/BLK

846

Fuel Injector 6 Control

44

YEL/BLK

1223

2 - 3 Shift Solenoid Valve Control (4L60E only)

45

--

--

Not Used

46

LT BLU/BLK

844

Fuel Injector 4 Control

47

TAN/WHT

845

Fuel Injector 5 Control

48

RED/BLK

453

Low Reference

49-52

--

--

Not Used

53

TAN/BLK

424

IC Timing Signal

54

WHT

423

IC Timing Control

55

DK GRN/WHT

817

VSS Signal

56

BLK/WHT

451

Ground

57

BLK/WHT

451

Ground

58

--

--

Not Used

59

DK GRN

1049

ECM/PCM/VCM Class 2 Serial Data

60

BLK/WHT

451

Ground

61-63

--

--

Not Used

64

YEL

400

VSS High Signal

65

PPL

401

VSS Low Signal

66-68

--

--

Not Used

69

YEL

492

MAF Sensor Signal

70

DK BLU

229

Fuel Enable Control

71

ORN/BLK

463

Requested Torque Signal

72

--

--

Not Used

73

LT GRN/BLK

1745

Fuel Injector 2 Control

74-75

--

--

Not Used

76

DK GRN/WHT

428

EVAP Canister Purge Solenoid Control

77-78

--

--

Not Used

79

TAN

1744

Fuel Injector 1 Control

80

--

--

Not Used

Powertrain Control Module Connector C2 (CLR) End View


Object Number: 15026  Size: CF

Connector Part Information

    • CLR PCM Connector C2
    • 80 Pin Connector

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

LT BLU

697

EGR Valve Supply Voltage

5

BRN/WHT

419

MIL Control

6-7

--

--

Not Used

8

WHT

121

Engine Speed Signal

9

TAN/BLK

464

Delivered Torque Signal

10

PPL

1666

HO2S High Signal [Bank 2 Sensor 1]

11

DK BLU

1980

HO2S High Signal [Bank 1 Sensor 2]

12

PPL/WHT

1665

HO2S High Signal [Bank 1 Sensor 1]

13-15

--

--

Not Used

16

ORN/BLK

434

Neutral Safety Switch Signal

17

RED

1226

Transmission Fluid Pressure Switch Signal C (4L60E only)

18

GRY

48

CPP Switch Signal

19-20

--

--

Not Used

21

BRN/WHT

1571

Traction Control Switch Signal

22

DK GRN/WHT

762

A/C Request Signal

23

PPL/WHT

1035

Starter Relay Coil Supply Voltage

24

BRN

86

Cruise Control Release Signal

25

LT GRN

432

MAP Sensor Signal

26

YEL

410

ECT Sensor Signal

27

ORN/BLK

380

A/C Refrigerant Pressure Sensor Signal

28

BRN

1456

EGR Valve Position Signal

29-32

--

--

Not Used

33

GRY

598

5 Volt Reference

34

LT BLU/BLK

1688

5 Volt Reference

35

GRY

720

Low Reference

36-38

--

--

Not Used

39

DK GRN/WHT

459

A/C Clutch Relay Control

40-41

--

--

Not Used

42

PNK/BLK

1746

Fuel Injector 3 Control

43-44

--

--

Not Used

45

ORN/BLK

1228

PC Solenoid High Control (4L60E only)

46

LT BLU/WHT

1229

PC Solenoid Low Control (4L60E only)

47

--

--

Not Used

48

WHT

687

3-2 Shift Solenoid Valve Control (4L60E only)

49

--

--

Not Used

50

TAN

472

IAT Sensor Signal

51-54

--

--

Not Used

55

DK GRN

890

Fuel Tank Pressure Sensor Signal

56

--

--

Not Used

57

DK BLU

1225

Transmission Fluid Pressure Switch Signal B (4L60E only)

58

BRN

1174

Oil Level Switch Signal

59-60

--

--

Not Used

61

ORN

225

Generator Turn ON Signal

62-67

--

--

Not Used

68

YEL/BLK

1227

TFT Sensor Signal (4L60E only)

69

PPL

1589

Fuel Level Sensor Signal [Primary]

70-75

--

--

Not Used

76

DK GRN

220

Starter Enable Control (If Equipped)

77

--

--

Not Used

78

BRN

418

TCC PWM Solenoid Valve Control (4L60E only)

79

TAN/BLK

422

TCC Solenoid Valve Control (4L60E only)

80

--

--

Not Used