GM Service Manual Online
For 1990-2009 cars only

Name

Location

A/C Amplifier

Below right side of the IP, attached to evaporator case

Blower Speed Selector Switch

Center of IP, above radio

Clutch Pedal Position (CPP) Switch (Manual Transaxle)

Mounted above the clutch pedal

Combination Switch on

Steering Column

Crankshaft Position Sensor

Bottom of the engine, mounted to the engine near the crankshaft pulley

Data Link Connector (DLC) OBD 2

Below the left side of the IP, near the center console

Diode Module

Behind the center IP, taped to the IP harness

Distributor

Left side of the engine

Duty Check Data Link Connector

Left Rear of the Engine Compartment Near the Shock Tower

Early Fuel Evaporation (EFE) Heater

Mounted between the intake manifold and the throttle body

Engine Coolant Temperature (ECT) Sensor

Left side of the engine, mounted in thermostat housing

Engine Cooling Fan Motor

Left front side of the engine compartment, behind the radiator

EVAP Canister Purge Valve

Right side engine compartment, on the intake manifold

EVAP Canister Vent Valve

Center of engine compartment, near the EVAP canister

EVAP Tank Pressure Control Solenoid Valve

Right side engine compartment, rear of the engine

Exhaust Gas Recirculation Vacuum Solenoid (EGR SV) Valve

Left side of the engine, next to the intake manifold

Exhaust Gas Recirculation (EGR) Bypass Valve

Left side of the engine, next to the intake manifold

Fuel Injector

In the engine throttle body

Fuel Injector Resistor

Left rear side of the engine compartment, attached to the bulkhead

Fuel Gauge Sender

In the fuel tank

Fuel Pump Assembly

In the fuel tank

Fuel Tank Pressure Sensor

In the fuel tank

Fuse Box

Left side of the engine compartment, mounted on Left inner side of the fender, behind the relay box

Heated Oxygen Sensor 1 (HO2S1)

Front of the engine in the exhaust manifold

Heated Oxygen Sensor 2 (HO2S2)

Below vehicle after a three-way catalytic converter (TWC)

Idle Speed Control (ISC) Motor

Top of engine, mounted to the throttle body

Ignition Control Module

Left engine compartment on the bulkhead near the strut tower

Ignition Coil

Left side of the engine compartment, on the bulkhead

Ignition Switch

Right side of the steering column

Instrument Panel Cluster Assembly

Left side of the IP

Intake Air Temperature (IAT) Sensor

Center engine compartment attached to air cleaner (ACL) housing

Junction Block

Behind left side of the IP

Manifold Absolute Pressure (MAP) Sensor

Right rear engine compartment, on the bulkhead

Noise Suppressor Filter

Left rear engine compartment, taped to the harness, below the ignition control module

Powertrain Control Module (PCM)

Behind the right side of the IP, near the glove box

Rear Defogger Switch

In the IP, left of steering column

Relay Box

Left front engine compartment, near the battery

Throttle Position (TP) Sensor

Right rear side of the engine, attached to the throttle body

Turn Signal/Combination Switch

On steering column

Vehicle Speed Sensor (VSS) (Automatic Transaxle)

Left side of the engine compartment, top of the transaxle