GM Service Manual Online
For 1990-2009 cars only
Table 1: Powertrain Control Module (PCM) Connector C1
Table 2: Powertrain Control Module (PCM) Connector C2

Powertrain Control Module (PCM) Connector C1


Object Number: 53524  Size: CF

Connector Part Information

    • 12191110
    • 80-Way F Micro-Pack 100 Series (Blue)

Pin

Wire Color

Circuit No.

Function

Component Connector Cavity

C1-01

--

--

--

--

C1-02

--

--

--

--

C1-03

--

--

--

--

C1-04

--

--

--

--

C1-05

--

--

--

--

C1-06

ORN/BLK

1057

Fuel Tank Pressure Sensor Ground

Fuel Level Sensor/Fuel Pump Ground

Fuel Tank Pressure Sensor A

Fuel Level Buffer Module C

C1-07

BRN/WHT

633

CMP Sensor Signal

CMP Sensor C

C1-08

PPL/WHT

430

CKP 7x Reference Signal

ICM D

C1-09

--

--

--

--

C1-10

GRY

705

Fuel Tank Pressure Sensor 5 Volt Reference

Fuel Tank Pressure Sensor C

C1-11

GRY

474

Fuel Level Buffer Module 5 Volt Reference

Fuel Level Buffer Module B

C1-12

--

--

--

--

C1-13

--

--

--

--

C1-14

--

--

--

--

C1-15

--

--

--

--

C1-16

--

--

--

--

C1-17

--

--

--

--

C1-18

BLK/WHT

451

PCM Ground

Engine Ground

C1-19

PNK

439

Ignition Positive Voltage

PCM IGN Fuse

C1-20

ORN

440

Battery Positive Voltage (B+)

PCM BATT Fuse

C1-21

DK BLU

417

TP Sensor Signal

TP Sensor C

C1-22

--

--

--

--

C1-23

--

--

--

--

C1-24

--

--

--

--

C1-25

ORN

406

Ignition Control B

ICM C

C1-26

WHT

423

Ignition Control A

ICM B

C1-27

--

--

--

--

C1-28

RED

1226

Transaxle Range C Input

Transmission P

C1-29

--

--

--

--

C1-30

--

--

--

--

C1-31

--

--

--

--

C1-32

--

--

--

--

C1-33

DK BLU

496

KS Signal

KS 1

C1-34

--

--

--

--

C1-35

PPL

420

TCC Brake Switch Input

TCC Brake Switch B

C1-36

LT GRN

66

A/C Request Signal

HVAC Controller A

C1-37

--

--

--

--

C1-38

--

--

--

--

C1-39

--

--

--

--

C1-40

--

--

--

--

C1-41

--

--

--

--

C1-42

--

--

--

--

C1-43

--

--

--

--

C1-44

--

--

--

--

C1-45

DK GRN

890

Fuel Tank Pressure Sensor Signal

Fuel Tank Pressure Sensor B

C1-46

YEL/BLK

1227

TFT Sensor Signal

Transmission L

C1-47

PPL

1589

Fuel Level Buffer Module Signal

Fuel Level Buffer Module D

C1-48

--

--

--

--

C1-49

RED/BLK

380

A/C Refrigerant Pressure Sensor Signal

A/C Refrigerant Pressure Sensor C

C1-50

--

--

--

--

C1-51

--

--

--

--

C1-52

BLK

552

A/C Refrigerant Pressure Sensor Ground

A/C Refrigerant Pressure Sensor A

C1-53

--

--

--

--

C1-54

YEL

410

ECT Sensor Signal

ECT Sensor B

C1-55

--

--

--

--

C1-56

--

--

--

--

C1-57

BLK

452

TP Sensor Ground

TP Sensor B

C1-58

--

--

--

--

C1-59

PPL

1807

Serial Data (Class II)

DLC Term 2

C1-60

TAN/WHT

551

PCM Ground

Engine Ground

C1-61

--

--

--

--

C1-62

LT GRN

432

MAP Sensor Signal

MAP Sensor B

C1-63

PPL/WHT

821

VSS High

VSS A

C1-64

--

--

--

--

C1-65

--

--

--

--

C1-66

BLK

470

EGR Valve Ground

EGR Valve B

C1-67

DK BLU

1225

Transaxle Range B Input

Transmission R

C1-68

PNK

1224

Transaxle Range A Input

Transmission N

C1-69

--

--

--

--

C1-70

YEL/BLK

1827

High Resolution Vehicle Speed Output

EBCM E

C1-71

--

--

--

--

C1-72

--

--

--

--

C1-73

ORN/BLK

434

PNP Switch Input

PNP Switch A

C1-74

--

--

--

--

C1-75

BLK

1744

Fuel Injector #1 Driver

Fuel Injector #1 B

C1-76

LT GRN/BLK

1745

Fuel Injector #2 Driver

Fuel Injector #2 B

C1-77

--

--

--

--

C1-78

--

--

--

--

C1-79

--

--

--

--

C1-80

--

--

--

--

Powertrain Control Module (PCM) Connector C2


Object Number: 53524  Size: CF

Connector Part Information

    • 12191110
    • 80-Way F Micro-Pack 100 Series (Black)

Pin

Wire Color

Circuit No.

Function

Component Connector Cavity

C2-01

--

--

--

--

C2-02

--

--

--

--

C2-03

--

--

--

--

C2-04

--

--

--

--

C2-05

--

--

--

--

C2-06

RED/BLK

1228

PC Solenoid High Control

Transmission C

C2-07

RED

1676

EGR Valve Ignition Feed

EGR Valve E

C2-08

DK GRN/WHT

465

Fuel Pump Relay Control

Fuel Pump Relay Term 2

C2-09

LT BLU/WHT

1229

PC Solenoid Low Control

Transmission D

C2-10

WHT

121

Tachometer Output

IP Harness A

C2-11

--

--

--

--

C2-12

--

--

--

--

C2-13

--

--

--

--

C2-14

BLK/WHT

1704

MAP Sensor Ground

MAP Sensor A

C2-15

--

--

--

--

C2-16

DK GRN/WHT

817

VSS Output (Cluster)

IP Junction Conn D

C2-17

BRN

818

VSS Output (Cruise)

IP Junction Conn C

C2-18

--

--

--

--

C2-19

BRN

1456

EGR Pintle Position Signal

EGR Valve C

C2-20

TAN

472

IAT Sensor Signal

IAT Sensor A

C2-21

TAN

413

O2S 1 Low

Engine Ground

C2-22

PPL

412

O2S 1 Signal

O2S 1 A

C2-23

TAN/WHT

1669

HO2S 2 Low

HO2S 2 A

C2-24

PPL/WHT

1668

HO2S 2 Signal

HO2S 2 B

C2-25

--

--

--

--

C2-26

--

--

--

--

C2-27

BRN

718

ECT Sensor Ground

ECT Sensor A

C2-28

GRY

720

IAT Sensor Ground

IAT Sensor A

C2-29

BLK

407

TFT Sensor Ground

Transmission M

C2-30

--

--

--

--

C2-31

RED/BLK

453

ICM Reference Low

ICM F

C2-32

GRY

597

EGR Valve 5 Volt Reference

EGR Valve D

C2-33

GRY

416

TP Sensor 5 Volt Reference

TP Sensor A

C2-34

GRY

596

A/C Refrigerant Pressure Sensor 5 Volt Reference

A/C Refrigerant Pressure Sensor B

C2-35

GRY

474

MAP Sensor 5 Volt Reference

MAP Sensor C

C2-36

RED

631

CMP Sensor Battery Positive Voltage (B+)

CMP Sensor A

C2-37

--

--

--

--

C2-38

--

--

--

--

C2-39

--

--

--

--

C2-40

--

--

--

--

C2-41

--

--

--

--

C2-42

--

--

--

--

C2-43

--

--

--

--

C2-44

--

--

--

--

C2-45

--

--

--

--

C2-46

BRN/WHT

419

MIL Control

IP Cluster

C2-47

--

--

--

--

C2-48

LT BLU/BLK

396

Cruise Engaged Input

Cruise Control Module J

C2-49

--

--

--

--

C2-50

TAN/BLK

422 (Auto)

456 (Man)

TCC Solenoid Control

TCC Solenoid T

C2-51

YEL/BLK

1223

2-3 SS Control

Transmission B

C2-52

WHT

687

3-2 SS Control

Transmission S

C2-53

LT GRN

1222

1-2 SS Control

Transmission A

C2-54

--

--

--

--

C2-55

DK GRN/WHT

459

A/C Compressor Clutch Relay Control

A/C Compressor Clutch Relay Term 85

C2-56

DK GRN/WHT

428

EVAP Canister Purge Valve Driver

EVAP Canister Purge Valve B

C2-57

BRN

418

TCC PWM Solenoid Control

Transmission U

C2-58

WHT

1310

EVAP Canister Vent Solenoid Driver

EVAP Canister Vent Solenoid B

C2-59

--

--

--

--

C2-60

--

--

--

--

C2-61

--

--

--

--

C2-62

LT GRN/BLK

822

VSS Low

VSS B

C2-63

PNK/BLK

632

CMP Sensor Ground

CMP Sensor B

C2-64

BLK/WHT

451

PCM Ground

Engine Ground

C2-65

BLK

533

Fuel Level Buffer Module Ground

Fuel Level Buffer Module M

C2-66

--

--

--

--

C2-67

--

--

--

--

C2-68

--

--

--

--

C2-69

--

--

--

--

C2-70

--

--

--

--

C2-71

LT BLU/WHT

1747

IAC Coil A High

IAC Valve D

C2-72

LT GRN/WHT

1749

IAC Coil B High

IAC Valve B

C2-73

LT GRN/BLK

444

IAC Coil B Low

IAC Valve A

C2-74

LT BLU/BLK

1748

IAC Coil A Low

IAC Valve C

C2-75

LT BLU/BLK

844

Fuel Injector #4 Driver

Fuel Injector #4 B

C2-76

PNK/BLK

1746

Fuel Injector #3 Driver

Fuel Injector #3 B

C2-77

--

--

--

--

C2-78

--

--

--

--

C2-79

--

--

--

--

C2-80

--

--

--

--