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

Lower right side of engine on crankshaft

1

5

--

7X Crankshaft Position sensor

Lower Rear of engine

23

72

--

A/C Compressor Relay

Right hand front of engine compartment, on relay bracket

0

1

--

A/C Refrigerant Pressure Sensor

Lower right hand side of engine, mounted to A/C line

2

7

--

Camshaft Position (CMP) Sensor

Right hand side of engine

27

77

--

Data Link Connector (DLC)

Below left hand side of I/P, near steering column

8

21

50-1

Engine Coolant Temperature (ECT) Sensor

Top left hand side of engine

1

3

--

Engine Hot Lamp

Upper left hand side of Instrument

Cluster

--

Refer to I/P diagnosis

--

Evaporative Canister Purge Solenoid Valve

Top rear of engine, on intake manifold

2

6

--

Evaporative Purge Vacuum Switch

Top rear center of engine

2

6

--

Exhaust Gas Recirculation (EGR) Valve

Upper left hand side of engine

2

6

202-18

Fuel Injectors

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

--

--

--

Fuel Pressure Regulator

Mounted on the Fuel Injector Rail

--

--

--

Fuel Pump/Fuel Level Sender

Mounted inside fuel tank

--

--

--

Fuel Pump Relay

Right hand front of engine compartment, on relay bracket

0

1

202-14

Fuse Block

RH side of Instrument Panel

18

50

--

Generator

Top right hand side of engine

5

14

202-16

Heated Oxygen sensor 1 (HO2S1)

Rear of engine, in exhaust manifold

2

6

202-16

Heated Oxygen sensor 2 (HO2S2)

Rear of engine, in exhaust manifold

24

73

202-16

Idle Air Control Valve (IAC)

Top of engine, front of Throttle Body Assembly

1

3

202-17

Ignition Control Module (ICM)

Top right hand front of engine

2

6

202-17

Intake Air Temperature (IAT) Sensor

Left hand front of engine compartment, on air intake duct

1

3

--

Knock Sensor (KS)

Front of engine, above starter

0

2

--

Malfunction Indicator Lamp (MIL)

Upper right hand side of Instrument Panel

--

Refer to I/P for diagnosis

--

Mass Air Flow (MAF) Sensor

Left hand front of engine compartment, in air cleaner duct

1

3

--

Powertrain Control Module (PCM)

Right hand side of lower I/P

26

76

21 - 10

Positive Crankcase Ventilation Valve

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

--

--

--

Primary Cooling Fan

Left hand side behind radiator

--

--

--

Primary Cooling Fan Relay

Right hand of engine compartment

0

1

202-20

Secondary Cooling Fan

Right hand side, behind radiator

--

--

--

Secondary Cooling Fan Relay

Right hand of engine compartment

0

1

202-20

SMCC II Cruise Control Module

Left hand rear of engine compartment, forward of shock tower

4

12

34-1

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

1

3

--

TCC Brake Switch

Below left hand side of I/P, on brake pedal support

20

59

202-20

Transaxle Range Switch/Park Neutral Position (PNP) Switch

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

--

--

--

Vehicle Speed Sensor (VSS)

Lower right hand of engine on Transaxle

1

4

--