GM Service Manual Online
For 1990-2009 cars only
Table 1: VCM Connector C1 (Blue)
Table 2: VCM Connector C2 (Red)
Table 3: VCM Connector C3 (Clear)
Table 4: VCM Connector C4 (Black)

VCM Connector C1 (Blue)


Object Number: 218792  Size: CF

Connector Part Information

    • VCM Connector C1 (Blue)
    • 32 Pin Connector

Pin

Wire Color

Circuit No.

Function

1-2

--

--

Not Used

3

BRN/WHT

633

1X CMP Signal

4-6

--

--

Not Used

7

TAN

1667

HO2S Bank 2 Sensor 1 Low

8

PNK/BLK

632

CMP Sensor Ground

9

PPL

30

Fuel Level Output

10

TAN/BLK

422

TCC Solenoid Control

11-12

--

--

Not Used

13

WHT

687

3-2 Shift Solenoid Control

14

--

--

Not Used

15

YEL/BLK

1827

VSS Output Signal (EBCM)

16-18

--

--

Not Used

19

PPL/WHT

1665

HO2S Bank 1 Sensor 1 Signal

20

--

--

Not Used

21

PPL

1666

HO2S Bank 2 Sensor 1 Signal

22

PPL/WHT

1668

HO2S Bank 1 Sensor 3 Signal

23-24

--

--

Not Used

25

TAN/WHT

1653

HO2S Bank 1 Sensor 1 Low

26

TAN/WHT

1669

HO2S Bank 1 Sensor 3 Low

27

--

--

Not Used

28

PPL

574

CKP Sensor Ground

29

LT GRN/BLK

822

VSS Low

30

PPL/WHT

821

VSS High

31

YEL

573

3X CKP Sensor Signal

32

--

--

Not Used

VCM Connector C2 (Red)


Object Number: 218792  Size: CF

Connector Part Information

    • VCM Connector C2 (Red)
    • 32 Pin Connector

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

WHT

1310

EVAP Canister Vent Solenoid Control

3

--

--

Not Used

4

YEL/BLK

1223

2-3 Shift Solenoid Control

5

--

--

Not Used

6

LT GRN

1222

1-2 Shift Solenoid Control

7

BRN

418

TCC PWM Solenoid Control

8

BLK

1744

Fuel Injector #1 Control

9

YEL/BLK

846

Fuel Injector #6 Control

10

BRN

1456

EGR Pintle Position Signal

11-12

--

--

Not Used

13

LT GRN/WHT

1749

IAC Coil B High

14

LT BLU/WHT

1747

IAC Coil A High

15

LT GRN/BLK

1745

Fuel Injector #2 Control

16

PNK/BLK

1746

Fuel Injector #3 Control

17-18

--

--

Not Used

19

DK BLU

496

KS Signal

20

WHT

121

Tachometer Output

21

LT GRN

432

MAP Sensor Signal

22

TAN

472

IAT Sensor Signal

23

YEL

410

ECT Sensor Signal

24

DK BLU

417

TP Sensor Signal

25

DK GRN

890

Fuel Tank Pressure Sensor Signal

26

--

--

Not Used

27

YEL/BLK

1227

TFT Sensor Signal

28

YEL

492

MAF Sensor Signal

29

LT GRN/BLK

444

IAC Coil B Low

30

LT BLU/BLK

1748

IAC Coil A Low

31

BLK/WHT

845

Fuel Injector #5 Control

32

LT BLU/BLK

844

Fuel Injector #4 Control

VCM Connector C3 (Clear)


Object Number: 218792  Size: CF

Connector Part Information

    • VCM Connector C3 (Clear)
    • 32 Pin Connector

Pin

Wire Color

Circuit No.

Function

1

DK GRN/WHT

459

A/C Compressor Enable Relay Control

2

DK GRN/WHT

428

EVAP Canister Purge Solenoid Control

3

--

--

Not Used

4

BLK

452

ECT/TP Sensor Ground

5

RED

225

Generator Control/Monitoring

6

RED/BLK

1228

PC Solenoid High

7-8

--

--

Not Used

9

WHT

423

IC Control

10

--

--

Not Used

11

RED

1226

Transmission Range C Signal

12

GRY

416

TP Sensor 5 V Reference

13

PPL

1589

Fuel Level Sensor Signal

14-15

--

--

Not Used

16

LT BLU WHT

1229

PC Solenoid Low

17

BLK/WHT

351

VCM Ground

18

BLK/WHT

351

VCM Ground

19

BLK

470

IAT/MAP/EGR Pintle Position/Fuel Tank Pressure/TFT Sensor Ground

20

--

--

Not Used

21

ORN

440

Battery Positive Voltage (B+)

22

DK BLU

1225

Transmission Range B Signal

23

PNK

1224

Transmission Range A Signal

24

--

--

Not Used

25

GRN/WHT

GRN/WHT

A/C Request Signal

26

WHT

776

PRNDL P Signal

27

GRY

474

Fuel Tank Pressure/EGR Pintle Position/MAP Sensor 5 V Reference

28

GRY

773

PRNDL C Signal

29

--

--

Not Used

30

GRN

603

A/C Pressure Signal

31

BLK/WHT

771

PRNDL A Signal

32

YEL

772

PRNDL B Signal

VCM Connector C4 (Black)


Object Number: 218795  Size: CF

Connector Part Information

    • VCM Connector C4 (Black)
    • 24 Pin Connector

Pin

Wire Color

Circuit No.

Function

1

DK GRN/WHT

465

Fuel Pump Relay Control

2

--

--

Not Used

3

DK GRN/WHT

817

VSS Output (TCCM, Cruise Control Module, Console,TBC Module

4

DK GRN

389

VSS Output Signal (Speedo, Radio)

5

BRN/WHT

419

MIL Control

6-9

--

--

Not Used

10

PPL

420

Brake Signal

11

PPL

1807

Serial Data (Class II)

12

--

--

Not Used

13

BRN

241

Ignition Positive Voltage

14

YEL

710

Serial Data (Class II)

15

--

--

Not Used

16

RED

1676

EGR Valve Control

17

PNK

1020

Ignition Positive Voltage

18

PNK

439

Ignition Positive Voltage

19

BLK/WHT

1695

4WD Front Wheel Lock Input

20

WHT

257

EGR Valve Low

21

--

--

Not Used

22

BRN/WHT

379

CPP Switch Signal

23

GRY/BLK

1694

4WD Low Signal

24

LT BLU/BLK

396

Cruise Engaged Signal