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:

Lane Departure Warning (LDW)
For vehicles with this feature, read the entire section before using it. Warning The LDW system is an aid to help the vehicle stay in the driving lane. It does not steer the vehicle. The LDW system may not: . Provide enough time to avoid a crash. . Detect lane markings under bad weather co ...

Parking Brake Adjustment (Drum Brake)
Note: The park brake cable adjusting nut is a nylon lock type. Use ONLY HAND TOOLS whenever tightening or loosening the adjusting nut. Apply and fully release the park brake several times. Verify that the park brake lever releases completely. Turn ON the ignition. Verify the red B ...

Odor Correction
Eliminating Air Conditioning Odor Odors may be emitted from the air conditioning system primarily at start up in hot, humid climates. The following conditions may cause the odor: Debris is present in the HVAC module. Microbial growth on the evaporator core When the blower ...