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:

Front Seat Back Recliner Handle Replacement
Front Seat Back Recliner Handle Replacement Callout Component Name 1 Front Seat Recliner Handle Cover Cap Procedure Use a flat-bladed tool to release the handle cover from the handle assembly. ...

Heater and Air Conditioning Evaporator and Blower Module Removal and Installation
Heater and Air Conditioning Evaporator and Blower Module Removal and Installation Callout Component Name Preliminary Procedures Recover the refrigerant. Refer to Refrigerant Recovery and Recharging. Drain the cooling sy ...

Valve Guide Reaming, and Valve and Seat Grinding
Valve Cleaning Procedure Use soft bristle wire brush to clean any carbon build-up from the valve head. DO NOT use a wire brush on any part of the valve stem. The valve stem is chrome plated to provide enhanced wear characteristics. Wire brushing the stem could remove the chr ...