Chevrolet Sonic Repair Manual: Immobilizer

Ignition Lock Cylinder Replacement

Removal Procedure Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection. Remove the upper trim cover and the lower trim cover f ...

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 ...

Other materials:

Hazard Warning Flashers
(Hazard Warning Flasher): Press and momentarily hold this button to make the front and rear turn signal lamps flash on and off. This warns others that you are having trouble. Press and momentarily hold again to turn the flashers off. ...

Tire Pressure Indicator Sensor Learn
Special Tools EL-46079 Tire Pressure Monitor Diagnostic Tool EL-50448 Tire Pressure Monitor Sensor Activation Tool For equivalent regional tools, refer to Special Tools. Learn Mode Description The tire pressure monitor system uses the instrument cluster, body control module ...

Engine Flywheel Removal
Special Tools EN-652 Flywheel Holder For equivalent regional tools, refer to Special Tools. Install EN-652 holder  (1) to hold the engine flywheel (2). Remove and DISCARD the 6 engine flywheel bolts (2). Remove the engine flywheel (1). ...