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:

Rear Brake Shield Replacement
Removal Procedure Warning: Refer to Brake Dust Warning. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle. Remove the rear tire and wheel assembly. Refer to Tire and Wheel Removal and Installation. Remove the rear brake rotor. Refer to R ...

Strut, Strut Component, or Spring Replacement
Disassembly Procedure Remove the strut assembly from the vehicle. Refer to Strut Assembly Removal and Installation. Note: The spring is compressed when the strut moves freely. Install the strut assembly (2) in a suitable spring compressor ...

Synchronizers Cleaning and Inspection
Note: When servicing the synchronizers, retain them in the order that they are removed. Mark the parts to ensure the correct position for inspection and assembly. Clean all the synchronizer parts in a suitable cleaning solvent and air dry all the parts. Inspect the 1 ...