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:

Towing the Vehicle
Notice: Incorrectly towing a disabled vehicle may cause damage. The damage would not be covered by the vehicle warranty. Do not lash or hook to the chassis components including the front and rear subframes, suspension control arms and links during towing and recovery of a disabled vehicl ...

Exhaust Manifold with Catalytic Converter Replacement (LUW)
Exhaust Manifold with Catalytic Converter Replacement Callout Component Name Warning: Refer to Protective Goggles and Glove Warning. Warning: Refer to Exhaust Service Warning. Preliminary Procedure ...

Reverse (Gen 1)
When the gear selector lever is moved to the Reverse (R) position (from the Park position) the normally-high 35R pressure control solenoid 2 is commanded ON and the following changes occur in the transmission? hydraulic and electrical systems: 3-5-Reverse Clutch Applies Manual Valv ...