GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View (8A Cell 201 Page #)

Figure #

Connector End View

24X Crankshaft Position (CKP) Sensor

Lower right side of engine, at end of crankshaft

12

33

--

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 plenum

20

60

--

Data Link Connector (DLC)

On bottom of Instrument Panel, right of steering column

39

123

50-1

Engine Coolant Temperature (ECT) Sensor

Top left hand side of engine

--

--

--

Engine Oil Level Switch

Center of Engine Oil Pan

2

6

--

Evaporative Canister Purge Solenoid

Top front of engine, on Intake Manifold

3

8

--

Evaporative Purge Vacuum Switch

Top, front of engine, on Intake Manifold

3

8

--

Exhaust Gas Recirculation (EGR) Valve

Upper left hand side of engine

--

--

--

Fuel Injectors

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

--

--

--

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

1

3

`

202-32

Heated Oxygen Sensor 1 (HO2S 1)

Rear of engine, in exhaust manifold

3

8

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

3

8

202-32

Ignition Control Module (ICM)

Top center rear of engine

3

8

202-23

Intake Air Temperature (IAT) Sensor

Left hand front of engine compartment, on air intake duct

9

26

--

Knock Sensor (KS)

Front of engine, above starter

12

33

--

Malfunction Indicator Lamp (MIL)

nstrument 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

11

32

20-11, 21-11, 22-10

Primary Cooling Fan Relay

Underhood Electrical Center #1

6

20

202-26

Secondary Cooling Fan Relay

Underhood Electrical Center #1

6

20

202-26

Theft Deterrent Module

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

24

73

--

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

3

8

--

Transaxle Range 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