Text Description

1989 Chevrolet R 20 P/U 2WD V8-350 5.7LSECTION Text Description

Air Cleaner Sensor (Six Cylinder): RH Side Of Air Cleaner
Air Cleaner Sensor (V8): LH Side Of Air Cleaner
AIR Diverter Module: RH Side Of Engine
AIR Diverter Valve (Inline Six Cylinder): LH Side Of Engine
AIR Diverter Valve (V6 & V8 RH Side Of Engine
AIR Pump: RH Side Of Engine



ALDL Diagnostic Connector: Under LH Side Of Instrument Panel



Back-Up Lamp Switch (Automatic Trans.): At Steering Column Gear Selector
Back-Up Lamp Switch (Manual Trans.): LH Side Of Transmission



Bulkhead Connector: LH Rear Of Engine Compartment
Clutch Release Switch: Under LH Side Of Instrument Panel, On Pedal Bracket



Coolant Temperature Sensor (TBI): RH Side Of Engine



Coolant Temperature Switch (TBI): RH Side Of Engine



Downshift Relay: Rear Of Engine Compartment



Downshift Relay (TBI): Top Front Of Engine



Downshift Relay: RH Rear Of Engine Compartment



ECM Module (TBI): RH Side Of Engine



EFE Valve: LH Side Of Engine



EGR Valve: Top Of Engine



Electric Air Control Solenoid: RH Side Of Engine



Electronic Control Module: Under RH Side Of Instrument Panel, Behind Glove Box



Engine Function Diagnosis Connector: Under LH Side Of Instrument Panel



Engine Heater: LH Side Of Engine



Engine Temperature Switch: LH Side Of Engine



ESC Knock Sensor: RH Side Of Engine



ESC Module: RH Top Of Engine



Fuel Filter (Inline): RH Frame Side Member



Fuel Injectors: Top Center Of Engine In Throttle Body



Fuel Module: Under LH Side Of Instrument Panel



Fuel Pump Prime Connector: Top Of Engine



Fuel Pump Relay: RH Side Of Engine Compartment



Fuel Pump Test Connector: Front Of Engine Compartment



Fuel Vapor Canister: RH Front Of Engine Compartment



Fuse Panel: Under LH Side Of Instrument Panel



Horn Relay: Under LH Side Of Instrument Panel



Hydraulic Clutch Reservoir Hose (TBI): LH Side Of Engine Compartment



Idle Air Control Actuator: RH Top Of Engine



Junction Block (4-Bbl.): LH Side Of Engine Compartment
Junction Block (TBI): LH Side Of Engine Compartment



Knock Sensor (V6): LH Side Of Engine
Knock Sensor (V8): RH Side Of Engine



MAP Sensor: RH Side Of Engine



MAP Sensor: RH Side Of Engine



MAP Sensor: RH Center Of Engine
Neutral Switch (Manual Trans.): Under LH Side Of Instrument Panel
Oil Pressure Sender: LH Rear Of Engine



Oil Pressure Sensor: Top Rear Of Engine



Oil Pressure Switch: LH Rear Of Engine



Oxygen Sensor: RH Rear Of Engine



Oxygen Sensor: LH Rear Of Exhaust Manifold



Oxygen Sensor (TBI): LH Rear Of Exhaust Manifold



Throttle Position Sensor: On Throttle Body
Throttle Return Valve: LH Side Of Engine
Throttle Valve Relay: LH Front Of Engine
Transmission Converter Clutch Connector: RH Rear Of Engine, Near Transmission



Transmission Downshift Relay: RH Side Of Dash Panel



Transmission Solenoid: LH Side Of Transmission
Transmission Switch: LH Side Of Transmission



Vacuum Release Valve: Under LH Side Of Instrument Panel, On Brake Pedal Bracket



Water Temperature Sensor: LH Side Of Engine
Water Temperature Switch: LH Side Of Engine



Windshield Wiper Motor: LH Rear Of Engine Compartment




RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.