Chevrolet Sonic Repair Manual: Engine Control Module

Turbocharger Wastegate Regulator Solenoid Valve Replacement

Charge Air Bypass Regulator Solenoid Valve Replacement Callout Component Name Preliminary Procedure Disconnect the radiator out ...

Engine Control Module Description

The Engine Control Module (ECM) interacts with many emission related components and systems, and monitors emission related components and systems for deterioration. OBD II diagnostics monitor the ...

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Driving for Better Fuel Economy
Driving habits can affect fuel mileage. Here are some driving tips to get the best fuel economy possible. Avoid fast starts and accelerate smoothly. Brake gradually and avoid abrupt stops. Avoid idling the engine for long periods of time. When road and weather conditions are appropriate, ...

Ignition Positions
The ignition switch has four different positions. To shift out of P (Park), the ignition must be in ON/RUN and the regular brake pedal applied. 1 (STOPPING THE ENGINE/LOCK/ OFF): When the vehicle is stopped, turn the ignition switch to LOCK/ OFF to turn the engine off. This position locks t ...

Timing Belt Idler Pulley Replacement
Timing Belt Idler Pulley Replacement Callout Component Name Preliminary Procedure Remove the timing belt. Refer to Timing Belt Replacement. 1 Timing Belt Idler Pulley Bolt Caution: Refer to ...