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:

Automatic Transmission
P (Park): This position locks the front wheels. It is the best position to use when you start the engine because the vehicle cannot move easily. Warning It is dangerous to get out of the vehicle if the shift lever is not fully in P (Park) with the parking brake firmly set. The vehicle can ro ...

Tire Rotation
Tires should be rotated every 12 000 km (7,500 mi). See Maintenance Schedule. Tires are rotated to achieve a uniform wear for all tires. The first rotation is the most important. Anytime unusual wear is noticed, rotate the tires as soon as possible, check for proper tire inflation pressure, an ...

Ignition Coil Removal
Special Tools EN-6009 Remover and Installer Ignition Module For equivalent regional tools, refer to Special Tools. Remove the 2 ignition coil bolts (1). Install EN-6009 remover and installer  (2) and remove the ignition coil (1). ...