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:

Master Cylinder Reservoir Replacement
Removal Procedure Warning: Refer to Brake Fluid Irritant Warning. Caution: Refer to Brake Fluid Effects on Paint and Electrical Components Caution. Remove the brake master cylinder. Refer to Master Cylinder Replacement. Remove and discard the b ...

Battery Charging
Special Tools EL 50313 Battery Tester For equivalent regional tools, refer to Special Tools. Diagnostic Aids For best results, use an automatic taper-rate battery charger with a voltage capability of 16 V. The charging area should be well ventilated. Do not charge a bat ...

K20 Engine Control 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 control module is not properly configured with the correct ...