GM Service Manual Online
For 1990-2009 cars only
Table 1: Camshaft Position (CMP) Sensor (HV-240)
Table 2: Camshaft Position (CMP) Sensor (MR-140)
Table 3: Crankshaft Position (CKP) Sensor
Table 4: Engine Coolant Temperature (ECT) Sensor
Table 5: Evaporative Emission (EVAP) Canister Purge Solenoid Valve
Table 6: Exhaust Gas Recirculation (EGR) Valve (MR-140)
Table 7: Exhaust Gas Recirculation (EGR) Valve (HV-240)
Table 8: Fuel Injector 1
Table 9: Fuel Injector 2
Table 10: Fuel Injector 3
Table 11: Fuel Injector 4
Table 12: Fuel Pump
Table 13: Heated Oxygen Sensor 1 (HO2S) 1 (MR-140)
Table 14: Heated Oxygen Sensor 2 (HO2S2) (MR-140)
Table 15: Idle Air Control (IAC) Valve
Table 16: Ignition Coil (IC) Module
Table 17: Intake Air Temperature (IAT) Sensor
Table 18: Knock Sensor (KS)
Table 19: Manifold Absolute Pressure (MAP) Sensor
Table 20: Octane Selection Switch (HV-240)
Table 21: Oxygen (O2) Sensor (HV-240)
Table 22: Rough Road Sensor (MR-140)
Table 23: Throttle Position (TP) Sensor
Table 24: Engine Control Module (ECM) A (HV-240)
Table 25: Engine Control Module (ECM) B (HV-240)
Table 26: Engine Control Module (ECM) K (MR-140)
Table 27: Engine Control Module (ECM) M (MR-140)

Camshaft Position (CMP) Sensor (HV-240)


Object Number: 1467078  Size: CH

Connector Part Information

    • KET MG 640541-5
    • 3-Way F ITC (Injector Connector) Series

Pin

Wire Color

Circuit Number

Function

1

PK/BK

1846

Ignition 1 Voltage

2

BN/WH

252

Low Reference

3

PU

633

Camshaft Position (CMP) Sensor Signal

Camshaft Position (CMP) Sensor (MR-140)


Object Number: 1467078  Size: CH

Connector Part Information

    • KET MG 640541-5
    • 3-Way F ITC (Injector Connector) Series

Pin

Wire Color

Circuit Number

Function

1

PK/BK

1846

Ignition 1 Voltage

2

BN/WH

251

Ground

3

PU

633

Camshaft Position (CMP) Sensor Signal

Crankshaft Position (CKP) Sensor


Object Number: 1467004  Size: CH

Connector Part Information

    • AMP 85205-1
    • 3-Way JR Power Timer 3P Hsg Ass'y (BK)

Pin

Wire Color

Circuit Number

Function

1

D-BU/WH

1869

Crankshaft Position (CKP) Sensor Signal

2

YE/BK

1868

Low Reference

3

BK/WH

51

Ground

Engine Coolant Temperature (ECT) Sensor


Object Number: 62426  Size: CH

Connector Part Information

    • PED 12040753
    • 2-Way F Metri-Pack 150 Series, Sealed, Pull To Seat (BK)

Pin

Wire Color

Circuit Number

Function

1

L-GN

410

Engine Coolant Temperature (ECT) Sensor Signal

2

BK

808

Low Reference

Evaporative Emission (EVAP) Canister Purge Solenoid Valve


Object Number: 684795  Size: CH

Connector Part Information

    • PED 12052643
    • 2-Way F Metri-Pack 150 Series, Sealed (RD)

Pin

Wire Color

Circuit Number

Function

1

PK/BK

1846

Ignition 1 Voltage

2

WH

428

Evaporative Emission (EVAP) Canister Purge Solenoid Control

Exhaust Gas Recirculation (EGR) Valve (MR-140)


Object Number: 684863  Size: CH

Connector Part Information

    • PED 12186139
    • 5-Way F Metri-Pack 150 Series, Sealed, Pull To Seat (L-GY)

Pin

Wire Color

Circuit Number

Function

1

D-GN

435

Exhaust Gas Recirulation (EGR) Solenoid Low Control

2

OG/BK

469

Low Reference

3

WH/BK

1456

Exhaust Gas Recirulation (EGR) Valve Position Signal

4

L-BU/BK

1688

5 Volt Reference

5

GY

120

Fuel Pump Supply Voltage

Exhaust Gas Recirculation (EGR) Valve (HV-240)


Object Number: 1466982  Size: CH

Connector Part Information

    • AMP 174352-2
    • 2-Way M Econoseal J Mark II + Connector Plug Housing (BK)

Pin

Wire Color

Circuit Number

Function

1

PK

139

Ignition 1 Voltage

2

D-GN

411

Exhaust Gas Recirculation (EGR) Valve Control

Fuel Injector 1


Object Number: 366123  Size: CH

Connector Part Information

    • PED 15326181
    • 2-Way F Micro-Pack 064 Series, Sealed (BK)

Pin

Wire Color

Circuit Number

Function

1

YE/BU

1744

Fuel Injector 1 Control

2

PK

139

Ignition 1 Voltage

Fuel Injector 2


Object Number: 366123  Size: CH

Connector Part Information

    • PED 15326181
    • 2-Way F Micro-Pack 064 Series, Sealed (BK)

Pin

Wire Color

Circuit Number

Function

1

BN/WH

1745

Fuel Injector 2 Control

2

PK

139

Ignition 1 Voltage

Fuel Injector 3


Object Number: 366123  Size: CH

Connector Part Information

    • PED 15326181
    • 2-Way F Micro-Pack 064 Series, Sealed (BK)

Pin

Wire Color

Circuit Number

Function

1

D-GN/BK

1746

Fuel Injector 3 Control

2

PK

139

Ignition 1 Voltage

Fuel Injector 4


Object Number: 366123  Size: CH

Connector Part Information

    • PED 15326181
    • 2-Way F Micro-Pack 064 Series, Sealed (BK)

Pin

Wire Color

Circuit Number

Function

1

D-GN/WH

844

Fuel Injector 4 Control

2

PK

139

Ignition 1 Voltage

Fuel Pump


Object Number: 1468528  Size: CH

Connector Part Information

    • AMP 936039
    • 6-Way Fuel Pump 6POS CONN'R ASS'Y

Pin

Wire Color

Circuit Number

Function

1

D-BU

1936

Fuel Level Sensor Signal

2

BK

1250

Ground

3

GY

120

Fuel Pump Supply Voltage

4

BK

1250

Ground

5

PU

172

Low Fuel Indicator Control

6

PU/BK

632

Low Reference

Heated Oxygen Sensor 1 (HO2S) 1 (MR-140)


Object Number: 684854  Size: CH

Connector Part Information

    • PED 12162144
    • 4-Way F Metri-Pack 150 Series, Sealed (BK)

Pin

Wire Color

Circuit Number

Function

1

D-GN/RD

1665

Heated Oxygen Sensor (HO2S) 1 Low Reference

2

PK/BK

1846

Ignition 1 Voltage

3

GY

1653

Heated Oxygen Sensor (HO2S) 1 Signal

4

BN/WH

1669

Heated Oxygen Sensor (HO2S) 1 Heater Control

Heated Oxygen Sensor 2 (HO2S2) (MR-140)


Object Number: 1466980  Size: CH

Connector Part Information

    • AMP 174259-2
    • 4-Way F 070 Series Econoseal-J MK-2 Cap Hsg 4P (BK)

Pin

Wire Color

Circuit Number

Function

1

PK/BK

1846

Ignition 1 Voltage

2

PU

1670

Heated Oxygen Sensor (HO2S) 2 Signal

3

BN/BK

1671

Heated Oxygen Sensor (HO2S) 2 Heater Control

4

L-GN

413

Heated Oxygen Sensor (HO2S) 2 Low Reference

Idle Air Control (IAC) Valve


Object Number: 38608  Size: CH

Connector Part Information

    • PED 12040754
    • 4 Way F Black Metri-Pack 150 (BK)

Pin

Wire Color

Circuit Number

Function

A

WH

444

Idle Air Control (IAC) Coil B Low Control

B

PU/WH

1749

Idle Air Control (IAC) Coil B High Control

C

YE/WH

1748

Idle Air Control (IAC) Coil A Low Control

D

BN

1747

Idle Air Control (IAC) Coil A High Control

Ignition Coil (IC) Module


Object Number: 516611  Size: CH

Connector Part Information

    • PED 12059595
    • 3-Way F Metri-Pack 150 Series, Sealed (BK)

Pin

Wire Color

Circuit Number

Function

1

D-GN/WH

423

Ignition Coil (IC) Timing Control (2 and 3)

2

PK

739

Ignition 1 Voltage

3

L-BU

406

Ignition Coil (IC) Timing Control (1 and 4)

Intake Air Temperature (IAT) Sensor


Object Number: 1467003  Size: CH

Connector Part Information

    • AMP 85202-1
    • 2-Way JR Power Timer 2P Hsg Ass'y (BK)

Pin

Wire Color

Circuit Number

Function

1

BK

808

Low Reference

2

GY

472

Intake Air Temperature (IAT) Sensor Signal

Knock Sensor (KS)


Object Number: 1466993  Size: CH

Connector Part Information

    • AMP 368215-1
    • 3-Way JPT 3P Ass'y for Knock Sensor

Pin

Wire Color

Circuit Number

Function

1

YE/BK

496

Knock Sensor (KS) Signal

2

D-BU/WH

808

Low Reference

3

BK/WH

51

Ground

Manifold Absolute Pressure (MAP) Sensor


Object Number: 1466984  Size: CH

Connector Part Information

    • AMP 174359-2
    • 3-Way F 070 Series Econoseal Mark-2 Cap 3P (BK)

Pin

Wire Color

Circuit Number

Function

1

L-BU/BK

1688

5 Volt Reference

2

D-BU/WH

432

Manifold Absolute Pressure (MAP) Sensor Signal

3

OG/BK

469

Low Reference

Octane Selection Switch (HV-240)


Object Number: 1467076  Size: CH

Connector Part Information

    • KET MG 640329
    • 3-Way M SWP Series

Pin

Wire Color

Circuit Number

Function

1

PU

723

Octane Switch Signal

2

BK/WH

51

Ground

3

L-BU

722

Octane Switch Signal

Oxygen (O2) Sensor (HV-240)


Object Number: 309480  Size: CH

Connector Part Information

    • PED 12010501
    • 2-Way F Weather Pack Tower, Sealed (BK)

Pin

Wire Color

Circuit Number

Function

1

GY

1653

Oxygen (O2) Sensor Signal

2

D-GN/RD

1665

Oxygen (O2) Sensor Low Reference

Rough Road Sensor (MR-140)


Object Number: 73223  Size: CH

Connector Part Information

    • PED 12162185
    • 3-Way Metri-Pack 150.2 Series, Sealed, Pull To Seat (BK)

Pin

Wire Color

Circuit Number

Function

A

GY

605

5 Volt Reference

B

D-GN

602

Rough Road Sensor Signal

C

PU/WH

632

Low Reference

Throttle Position (TP) Sensor


Object Number: 258299  Size: CH

Connector Part Information

    • PED 12065287
    • 3-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit Number

Function

1

BK

808

Low Reference

2

D-GN/WH

416

5 Volt Reference

3

GY

417

Throttle Position (TP) Sensor Signal

Engine Control Module (ECM) A (HV-240)

 

Connector Part Information

    • PED 12129231
    • 32-Way Retainer Lock (BK)

Pin

Wire Color

Circuit Number

Function

A1

BK/WH

51

Ground

A2

BK/WH

51

Ground

A3

YE/BK

496

Knock Sensor Signal

A4

D-GN

411

Exhaust Gas Recirculation (EGR) Valve Control

A5

--

--

Not Used

A6

YE/BK

1868

Low Reference

A7

GY

417

Throttle Position (TP) Sensor Signal

A8

D-GN/BK

1746

Fuel Injector 3 Control

A9

YE/D-BU

1744

Fuel Injector 1 Control

A10

BK/WH

252

Low Reference

A11

L-GN

410

Engine Coolant Temperature (ECT) Sensor Signal

A12

D-GN/RD

1665

Oxygen (O2) Sensor 1 Low Reference (Unleaded Only)

A13

PU/WH

1749

Idle Air Control (IAC) Coil B High Control

A14

--

--

Not Used

A15

D-GN/WH

416

5-Volt Reference

A16

OG/BK

469

Low Reference

A17

BK/WH

51

Ground

A18

L-BU

406

Ignition Coil (IC) 1 and 4 Control

A19

D-GN/WH

423

Ignition Coil (IC) 2 and 3 Control

A20

WH

428

Evaporative Emissions (EVAP) Canister Purge Solenoid Control

A21

D-BU/WH

1869

Crankshaft Position (CKP) Sensor Signal

A22

BN/WH

1745

Fuel Injector 2 Control

A23

GY

472

Intake Air Temperature (IAT) Sensor 5-Volt Reference

A24

D-BU/WH

432

Manifold Absolute Pressure (MAP) Sensor Signal

A25

PU

633

Camshaft Position (CMP) Sensor Signal

A26

D-GN/WH

844

Injector 4 Signal

A27

GY

1653

Oxygen (O2) Sensor 1 Signal (Unleaded Only)

A28

BN

1747

Idle Air Control (IAC) Coil A High Control

A29

WH

444

Idle Air Control (IAC) B Low Control

A30

YE/WH

1748

Idle Air Control (IAC) A Low Control

A31

BN/BK

1688

5-Volt Reference Voltage

A32

BY/WH

808

Low Reference

Engine Control Module (ECM) B (HV-240)


Object Number: 1468388  Size: CF

Connector Part Information

    • PED 12129232
    • 32-Way Retainer Lock (WH)

Pin

Wire Color

Circuit Number

Function

B1

PU/WH

632

Low Reference

B2

OG

440

Battery Positive Voltage

B3

PK/D-BU

539

Ignition 1 Voltage

B4-B6

--

--

Not Used

B7

L-BU

380

A/C Refrigerant Pressure (ACP) Sensor Signal

B8

L-BU

722

Octane Switch Signal

B9

GY

121

Engine Speed Signal

B10

D-GN/WH

762

A/C Request Signal

B11

--

--

Not Used

B12

D-BU

473

High Speed Cooling Fan Relay Control

B13

--

--

Not Used

B14

PU

1807

CAN Serial Data High

B15

PU

2000

Keyword Serial Data

B16

--

--

Not Used

B17

GY

605

5-Volt Reference

B18

OG

440

Battery Positive Voltage

B19

GY

1936

Fuel Gage

B20-B21

--

--

Not Used

B22

PU

723

Octane Switch Signal

B23

D-GN/WH

817

Vehicle Speed Signal (Manual Transmission)

B24

D-GN

135

Engine Coolant (ECT) Sensor Gage Signal

B25

--

--

Not Used

B26

L-GN

465

Fuel Pump Relay Control

B27

D-GN/WH

335

Low Speed Cooling Fan Relay Control

B28

D-GN

67

A/C Compressor Clutch Coil Supply Voltage

B29

--

--

Not Used

B30

YE

710

CAN Serial Data Low

B31

WH

30

Fuel Level Sensor Signal

B32

BN/WH

419

Mulfunction Indicator Lamp (MIL) Control

Engine Control Module (ECM) K (MR-140)


Object Number: 1466972  Size: CF

Connector Part Information

    • AMP 0-368434-2
    • 64-Way F ECU 64P Conn Ass'y (32-bit-B)

Pin

Wire Color

Circuit Number

Function

K1

OG

440

Battery Positive Voltage

K2-K4

--

--

Not Used

K5

BK/WH

51

Ground

K6

D-GN/WH

817

Vehicle Speed Signal (Manual Transmission)

K7

D-BU

876

Rough Road Signal - W/ABS

K8-K11

--

--

Not Used

K12

D-BU

473

High Speed Cooling Fan Relay Control

K13

--

--

Not Used

K14

PU

1807

CAN Serial Data High

K15

YE

710

CAN Serial Data Low

K16

BN/WH

1669

Heated Oxygen Sensor (HO2S) 1 Heater Control

K17

OG

440

Battery Positive Voltage

K18

PK/BN

539

Ignition 1 Voltage

K19-K20

--

--

Not Used

K21

D-GN

602

Rough Road Sensor Signal

K22

L-BU

380

A/C Refrigerant Pressure (ACP) Sensor Signal

K23

--

--

Not Used

K24

D-GN

135

Engine Coolant Temperature (ECT) Sensor Gage Signal

K25

GY

121

Engine Speed Signal

K26-K27

--

--

Not Used

K28

D-GN/WH

335

Low Speed Cooling Fan Relay Control

K29

D-GN

67

A/C Compressor Clutch Coil Supply Voltage

K30

WH

30

Fuel Level Sensor Signal

K31

--

--

Not Used

K32

PU

2000

Keyword Serial Data

K33

--

--

Not Used

K34

PU/BK

632

Low Reference

K35

D-GN/WH

762

A/C Request Signal

K36

PU

1670

Heated Oxygen Sensor (HO2S) 2 Signal

K37-K49

--

--

Not Used

K50

GY

605

5-Volt Reference

K51

GY

1936

Fuel Level Sensor Signal

K52

YE/D-GN

890

Fuel Tank Pressure Sensor Signal

K53

L-GN

413

Heated Oxygen Sensor (HO2S) 2 Low Reference

K54

L-GN

465

Fuel Pump Relay Control

K55-K63

--

--

Not Used

K64

BN/WH

419

Mulfunction Indicator Lamp (MIL) Control

Engine Control Module (ECM) M (MR-140)


Object Number: 1481262  Size: CF

Connector Part Information

    • AMP 1-368434-1
    • 64-Way F ECU 64P Conn Ass'y (32-bit-B)

Pin

Wire Color

Circuit Number

Function

M1

L-BU

406

Ignition Coil (IC) Timing Control 1 and 4

M2

BN/BK

1671

Heated Oxygen Sensor (HO2S) 2 Heater Control

M3

GY

120

Fuel Pump Supply Voltage

M4

WH

428

Evaporative Emissions (EVAP) Canister Purge Solenoid Control

M5

YE/BK

1868

Low Reference

M6

GY

417

Throttle Position (TP) Sensor Signal

M7

GY

472

Intake Air Temperature (IAT) Sensor Signal

M8

D-BU/WH

432

Manifold Absolute Pressure (MAP) Sensor Signal

M9

WH/BK

1456

Exhaust Gas Recirculation (EGR) Valve Position Signal

M10

--

--

Not Used

M11

D-GN/WH

844

Fuel Injector 4 Control

M12

GY

1653

Heated Oxygen Sensor (HO2S) 1 Signal

M13

BN

1747

Idle Air Control (IAC) A High Control

M14

WH

444

Idle Air Control (IAC) B Low Control

M15

YE/WH

1748

Idle Air Control (IAC) A Low Control

M16

L-BU/BK

1688

5-volt Reference

M17

--

--

Not Used

M18

YE/BK

496

Knock Sensor Signal

M19

D-GN

435

Exhaust Gas Recirculation (EGR) Solenoid Low Control

M20

--

--

Not Used

M21

D-BU/WH

1869

Crankshaft Position (CKP) Sensor Signal

M22

BN/WH

1745

Fuel Injector 2 Control

M23

--

--

Not Used

M24

D-GN/BK

1746

Fuel Injector 3 Control

M25

YE/D-BU

1744

Fuel Injector 1 Control

M26

PU

633

Camshaft Position (CMP) Sensor Signal

M27

--

--

Not Used

M28

L-GN

410

Engine Coolant Temperature (ECT) Sensor Signal

M29

D-GN/RD

1665

Heated Oxygen Sensor (HO2S) 1 Low Reference

M30

PU/WH

1749

Idle Air Control (IAC) Coil B High Control

M31

--

--

Not Used

M32

D-GN/WH

416

5-volt Reference

M33

L-BU

406

Ignition Coil (IC) Timing Control (1 and 4)

M34

--

--

Not Used

M35

D-GN/WH

423

Ignition Coil (IC) Timing Control (2 and 3)

M36

--

--

Not Used

M37

BK/WH

51

Ground

M38

BK/WH

51

Ground

M39

BK/WH

51

Ground

M40

BK/WH

51

Ground

M41

BK/WH

51

Ground

M42-M47

--

--

Not Used

M48

OG/BK

469

Low Reference

M49-M50

--

--

Not Used

M51

D-GN/WH

423

Ignition Coil (IC) Timing Control (2 and 3)

M52

D-GN

435

Exhaust Gas Recirulation (EGR) Low Control

M53-M63

--

--

Not Used

M64

BK

808

Low Reference