GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View (8A Cell 201 Page #)

Figure #

Connector End View

18X Crankshaft Position (CKP) Sensor

Lower right side of engine

11

29

202-30

A/C Compressor Relay

Underhood Electrical Center #1

6

20

202-26

A/C Refrigerant Pressure Sensor

Right hand side of engine compartment, below accumulator

2

7

--

Camshaft Position (CMP) Sensor

Right hand side of engine, below cover

11

30

--

Data Link Connector (DLC)

On bottom of Instrument Panel, right of steering column

39

123

Refer to Data Link Connector (DLC) in Electrical Diagnosis

Engine Coolant Temperature (ECT) Sensor

Top left hand side of engine

7

21

--

Engine Oil level Lamp

Upper left hand side of Instrument

Cluster

Refer to Instrument Cluster in Electrical Diagnosis

--

--

Engine Oil Level Switch

Front Center of Engine Oil Pan

22

70

--

Evaporative Canister Purge Solenoid

Top front of engine, on Intake Manifold

7

22

--

Evaporative Purge Vacuum Switch

Top, rear, center of engine

8

24

--

Exhaust Gas Recirculation (EGR) Valve

Upper left hand side of engine

11

30

202-33

Fuel Injectors

Top of engine, mounted to fuel rail, at each cylinder intake port

--

--

--

Fuel Pressure Regulator

Mounted on the Fuel Injector Rail, top, left hand side of engine

--

--

--

Fuel Pump Motor

Mounted inside fuel tank

--

--

--

Fuel Pump Relay

Underhood Electrical Center #1

6

20

202-26

Fuse Block

Right hand side of Instrument Panel, in right hand door opening

21

63

--

Generator

Top center right hand side of engine

8

24

202-32

Heated Oxygen Sensor 1 (HO2S 1)

Rear of engine, in exhaust manifold

8

24

202-32

Heated Oxygen Sensor 2 (HO2S 2)

In exhaust system, behind Catalytic Converter

10

28

202-32

Idle Air Control Valve (IAC)

Top of engine, front of Throttle Body Assembly

7

21

202-32

Ignition Control Module (ICM)

Top right hand front of engine

11

29

202-23

Intake Air Temperature (IAT) Sensor

Left hand front of engine compartment, on air intake duct

9

26

--

Bank 1 Knock Sensor (KS)

Front of engine, above starter

12

33

--

Bank 2 Knock Sensor (KS)

Lower right hand rear of engine

15

41

--

Malfunction Indicator Lamp (MIL)(Chevy)

Upper right hand side of Instrument Panel

Refer to Instrument Cluster in Electrical Diagnosis

--

--

Manifold Absolute Pressure (MAP) Sensor

Top rear of engine, on intake manifold

7

22

--

Mass Air Flow (MAF) Sensor

Left hand front of engine compartment, in air cleaner duct

--

--

--

Powertrain Control Module (PCM)

Right hand side of engine compartment, forward of strut tower

PCM 80-Way Blue Connector C1 Details

PCM 80-Way Clear Connector C2 Details

--

--

Powertrain Control Module Ground

Transaxle Stud

0

2

--

Powertrain Control Module Ground

Right hand side of engine, behind Ignition Control Module Bracket

11

31

--

Positive Crankcase Ventilation Valve

Top, right hand, center of engine, below Manifold Absolute Pressure (MAP) Sensor

7

22

--

Primary Cooling Fan

Left hand side behind radiator

6

18

--

Primary Cooling Fan Relay

Underhood Electrical Center #1

6

20

202-26

Secondary Cooling Fan

Right hand side, behind radiator

6

18

--

Secondary Cooling Fan Relay

Underhood Electrical Center #1

6

20

202-26

SMCC II Cruise Control Module

Left hand side of engine compartment, near strut tower

13

38

Refer to Cruise Control in Electrical Diagnosis

Theft Deterrent Module

Behind right hand side of Instrument Panel, above Instrument Panel compartment

24

73

Refer to Theft Deterrent System in Electrical Diagnosis

Throttle Body

Mounted to the Upper Intake Manifold, top, left hand side of engine

--

--

--

Throttle Position (TP) Sensor

Top of engine, on Throttle Body Assembly

--

--

--

Torque Converter Clutch Connector

Lower left hand side of engine compartment

1

2

202-2

Transaxle Range Switch / Park Neutral Position (PNP) Switch

Rear left hand side of engine compartment, mounted to top of transaxle

0

2

202-36

Underhood Electrical Center #1

Right hand side of engine compartment, forward of strut tower

6

20

202-26

Vehicle Speed Sensor (VSS) / Transaxle Output Speed Sensor (TOSS)

Right hand of engine, on Transaxle

8

23

--