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:

Brake Pad Inspection
Warning: Refer to Brake Dust Warning. Inspect the disc brake pads at regular intervals, or whenever the tire and wheel assemblies are removed from the vehicle. If replacement is necessary, always replace disc brake pads in axle sets. Inspect both edges of the disc brake ...

Tire Rotation
In order to equalize wear, rotate the tires at the specified intervals. Also, rotate the tire and wheel assembly whenever you notice uneven tire wear. Radial tires tend to wear faster in the shoulder area, particularly in front positions, due to design. Radial tires in non-drive locations may ...

Control Valve Body Cover Replacement
Removal Procedure Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle. Remove the front bumper fascia opening lower cover. Refer to Front Bumper ...