Chevrolet Sonic Repair Manual: Secondary

Multi-Axis Acceleration Sensor Module Programming and Setup

Note: DO NOT program a control module unless directed to by a service procedure or a service bulletin. If the Multi-axis Acceleration Sensor or Inertia Sensor Module (IMU) is not pro ...

SIR Deployed Inflator Modules Are Hot Warning

Warning: After deployment, the metal surfaces of the SIR component may be very hot. To help avoid a fire or personal injury: Allow sufficient time for cooling before touching any metal su ...

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Immobilizer Description and Operation
The immobilizer system functions are provided by the body control module (BCM) and the engine control module (ECM), as well as any modules which store and report the environment identifier. When an ignition key is inserted into the ignition lock cylinder and the ignition is switched ON, the ...

Heating and Air Conditioning System Description and Operation
Engine Coolant Engine coolant is the key element of the heating system. The engine thermostat controls the normal engine operating coolant temperature. Coolant pumped out of the engine enters the heater core through the inlet heater hose. The air flowing through the HVAC module abs ...

Electronic Ignition System Description
Electronic Ignition System Operation The electronic ignition system produces and controls the high energy secondary spark. This spark ignites the compressed air/fuel mixture at precisely the correct time, providing optimal performance, fuel economy, and control of exhaust emissions. ...