GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View (8A Cell 201 Page #)

Figure

Connector Eng View

24X Crankshaft Position (CKP) Sensor

Front of engine

8

15

--

7X Crankshaft Position (CKP) Sensor

Front right side of engine

7

13

--

A/C Compressor Relay

Right Rear Engine Compartment

37

71

11-4

A/C Refrigerant Pressure Sensor

Right hand side of engine compartment

31

61

--

Camshaft Position (CMP) Sensor

Rear of engine

4

7

--

Data Link Connector (DLC)

On bottom of Instrument Panel, right of steering column

25

50

202-20

Engine Coolant Temperature (ECT) Sensor

Top left rear of engine

4

7

--

Engine Oil level Lamp

Upper left hand side of Instrument Cluster

--

Refer to I/P for diagnosis

--

Engine Oil Level Sensor

Right rear bottom of engine

8

16

--

Evaporative Emission Canister Purge Solenoid

Rear of Engine Compartment

4

7

--

Evaporative Emission Canister Vent Valve Solenoid

Rh front of engine Compartment

--

--

--

Exhaust Gas Recirculation (EGR) Valve

Upper left hand side of engine

4

7

202-51

Fuel Injectors

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

4

7

--

Fuel Pressure Regulator

Mounted on the Fuel Injector Rail, top

--

--

--

Fuel Pump/Fuel Level Sender

Mounted inside fuel tank

--

--

--

Fuel Pump Relay

Right rear engine compartment

2

3

202-53

Fuse Block

LH side of Instrument Panel

25

42

11-0

Generator

Rear of engine

4

7

202-53

Heated Oxygen Sensor 1 (HO2S1)

Rear of engine, in exhaust manifold

4

7

202-54

Heated Oxygen Sensor 2 (HO2S2)

In exhaust system, behind Catalytic Converter

5

10

202-29

Idle Air Control Valve (IAC)

Top of engine, front of Throttle Body Assembly

6

12

202-54

Ignition Control Module (ICM)

Top right hand front of engine

--

--

--

Intake Air Temperature (IAT) Sensor

Left hand front of engine compartment, on air intake duct

6

12

--

Knock Sensor (KS)

Front of engine, above starter

7

13

--

Malfunction Indicator Lamp (MIL)

Upper right hand side of Instrument Panel

--

Refer to I/P Cluster for Repairs

--

Manifold Absolute Pressure (MAP) Sensor

Top rear of engine, on intake manifold

4

7

--

Mass Air Flow (MAF) Sensor

Left hand front of engine compartment, in air cleaner duct before throttle body

6

12

--

Powertrain Control Module (PCM)

Right hand side of lower I/P

23

45

202-29

Powertrain Control Module Ground

Right hand side of engine, behind Ignition Control Module Bracket

12

22

--

Positive Crankcase Ventilation Valve

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

--

--

--

Cooling Fan

Left hand side behind radiator

3

5

--

Cooling Fan Relay

Right Rear of engine compartment

2

3

202-50

SMCC II Cruise Control Module

Left hand rear of engine compartment,center front of dash

17

33

202-19

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

16

12

--

TCC Brake Switch

Lower left hand side of I/P

26

52

202-49

Transaxle Range Switch / Park Neutral Position (PNP) Switch

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

2

4

202-28

Vehicle Speed Sensor (VSS)

Lower right hand of engine on Transaxle

8

16

--