GM Service Manual Online
For 1990-2009 cars only

Name

Location

A/C Amplifier

Behind RH instrument panel, above evaporator case behind the IP compartment

Brake Pressure Modulator Valve (BPMV)

LH rear of engine compartment, below master cylinder

Circuit Opening Relay, fuel pump relay

Behind center I/P near radio

Camshaft Position (CMP) Sensor

LH side of engine compartment, attached to cylinder head

Crankshaft Position (CKP) Sensor

Bottom of engine, near crankshaft pulley

Cruise Control Module

Center console below radio

Data Link Connector (DLC)- OBD 2

Under LH instrument panel, attached to knee bolster

Data Link Connector (Underhood)

LH rear of engine compartment attached to strut tower

Daytime Running Lamps (DRL) Control Module

Behind RH instrument panel, mounted above IP compartment

EFI Relay

Fuse and Relay Box, underhood left side of engine compartment

Engine Coolant Temperature (ECT) Sensor

Left side of engine, below ignition distributor

EVAP Canister

Left side of engine compartment

EVAP Canister Purge Vacuum Switch

LH side of cylinder head

Exhaust Gas Recirculation (EGR) Valve

Left side of engine

Exhaust Gas Recirculation (EGR) Solenoid Vacuum Valve

Left side of engine, near EGR valve

Fuel Injector No. 1

Top of engine in number 1 intake port

Fuel Injector No. 2

Top of engine in number 2 intake port

Fuel Injector No. 3

Top of engine in number 3 intake port

Fuel Injector No. 4

Top of engine in number 4 intake port

Fuel Sender Assembly, with fuel pump

Under rear of vehicle, in fuel tank

Fuse And Relay Box

LH front engine compartment, left of air cleaner (ACL)

Heated Oxygen Sensor 2 (HO2S2)

Below vehicle, after three way catalytic converter (TWC)

Idle Air Control (IAC) Valve

LH front of engine compartment, below throttle body

Ignition Coil

LH side of engine compartment, attached to cylinder head

Ignition Switch

Instrument panel, right of steering column

Instrument Cluster Assembly

LH instrument panel

Intake Air Temperature (IAT) Sensor

In rear of air cleaner (ACL)

Junction Block 1

Behind LH body hinge pillar trim panel

Junction Block 2

LH instrument panel, behind storage box access cover

Junction Block 3

Behind center instrument panel

Manifold Absolute Pressure (MAP) Sensor

Right of center on engine bulkhead

Noise Filter

Behind center console, taped to engine accessory harness near PCM

Oxygen Sensor 1 (O2S1)

Front of engine compartment, below exhaust manifold

Parking Brake Switch

In center console, mounted to parking brake lever

Powertrain Control Module (PCM)

Front of center console, below radio

Rear Defogger Switch

Center of instrument panel, above radio

Starter

LH front of engine compartment, below intake manifold

Stoplamp Switch

Behind LH instrument panel, on brake pedal support bracket

Throttle Position Sensor (TP)

Front of engine compartment, mounted on throttle body

Turn Signal/Headlamp Switch

Mounted to upper steering column

Vehicle Speed Sensor (VSS)

LH rear of transaxle