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Home >> GMC >> 1998 >> Envoy >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Engine Component Tests - 4.3L >> Component Locations
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Component Locations

NOTE: Component location illustrations are not available at time of publication.
COMPONENT LOCATIONS (VIN W & X)

Component Location
A/C Compressor High Pressure Cut-Off Switch On Rear Of A/C Compressor
A/C Compressor Relay In Power Distribution Box, Left Front Of Engine Compartment
A/C Cycling Switch On Accumulator
A/C High Pressure Cut-Off Switch On Rear Of A/C Compressor
Camshaft Position (CMP) Sensor In Distributor
Crankshaft Position (CKP) Sensor Below Right Front Of Engine, Near Harmonic Balancer
Cruise Control Module Left Rear Of Engine Compartment, On Cowl
Data Link Connector (DLC) Lower Left Side Of Instrument Panel
Distributor Top Rear Of Engine
EGR Valve Top Rear Of Engine, Near Drive Belt
Electronic Ignition Control Module Top Right Side Of Engine
Engine Coolant Temperature (ECT) Sensor Top Front Of Engine, Between A/C Compressor & EGR Valve, On Thermostat Housing
EVAP Canister Left Rear Of Vehicle, Near Fuel Tank
EVAP Canister Purge Solenoid Top Right Center Of Engine
EVAP Canister Vent Valve On Crossmember At Fuel Tank
Fuel Injector Top Center Of Engine
Fuel Level Sensor Top Of Fuel Tank
Fuel Pump Prime Connector Left Rear Side Of Engine Compartment
Fuel Pump Relay In Power Distribution Box In Left Front Of Engine Compartment
Fuel Tank Pressure Sensor Top Of Fuel Tank
Idle Air Control (IAC) Valve Top Left Side Of Engine
Ignition Coil Top Right Side Of Engine
Intake Air Temperature (IAT) Sensor Left Front Of Engine Compartment, On Air Intake Duct
Knock Sensor Top Rear Of Engine, Above Transmission Bellhousing
Manifold Absolute Pressure (MAP) Sensor Top Center Of Engine, On Intake Manifold
Mass Airflow (MAF) Sensor Left Front Of Engine Compartment, In Air Intake Duct
Oxygen Sensor (O2S)
Bank 1, Sensor No. 1 On Rear Of Left Exhaust Pipe, To Left Side Of Transmission
Bank 2, Sensor No. 1 Right Rear Of Engine, In Exhaust Pipe
Bank 1, Sensor No. 3 Rear Of Catalytic Converter
Relay Center Behind Instrument Panel Glove Box
Throttle Position (TP) Sensor Top Left Side Of Engine
Vehicle Control Module (VCM) Right Side Of Engine Compartment
Vehicle Speed Sensor
A/T With 2WD Right Rear Of Transmission
A/T With 4WD Left Rear Of Transfer Case
M/T With 2WD Left Rear Of Transmission
M/T With 4WD Left Rear Of Transfer Case