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:

Personalization Menu (Radio with Touchscreen)
Settings can be made with the ignition ON and the vehicle not moving. Use the audio system controls to access the personalization menus for customizing vehicle features. The following are all possible personalization features. Depending on the vehicle, some may not be available. (Home): Pres ...

Spark Plug Inspection
Spark Plug Usage Ensure that the correct spark plug is installed. An incorrect spark plug causes driveability conditions. Ensure that the spark plug has the correct heat range. An incorrect heat range causes the following conditions: Spark plug fouling—Colder plu ...

Fuel Tank Filler Pipe Replacement (Steel Tank)
Removal Procedure Remove the fuel filler door housing. Refer to Fuel Tank Filler Door Latch Housing Replacement. Remove the bracket fastener (1). Lift and support the vehicle. Refer to Lifting and Jacking the Vehicle. Remove the fuel tank fille ...