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:

Inflatable Restraint Sensing and Diagnostic Module Programming and Setup
Special Tools EL-49642 SPS Programming Support Tool For equivalent regional tools, refer to Special Tools. Note: DO NOT program a control module unless directed to by a service procedure or a service bulletin. If the ECU is not properly configured with the correct calibration ...

Front Wheel Bearing and Hub Replacement
Special Tools CH-50559 Wheel Hub/Bearing Remover Kit For equivalent regional tools, refer to Special Tools. Removal Procedure Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle. Remove the steering knuckle assembly from the vehicle. Refer to Steering ...

Camshaft Replacement
Special Tools EN-422 Installer For equivalent regional tools, refer to Special Tools. Removal Procedure Note: Take extreme care to prevent any scratches, nicks or damage to the camshafts and caps bearing surfaces. Remove the timing belt rear cover ( ...