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 Side Door Window Regulator Replacement
Front Side Door Window Regulator Replacement Callout Component Name Warning: Refer to Glass and Sheet Metal Handling Warning. Preliminary Procedure Remove the front side door window from the guide. Do Not remov ...

Radiator Mounting Stud Repair
Repair Procedure Note: If the radiator is leaky, replace it. Refer to Radiator Replacement. Pressure test the cooling system. Refer to Cooling System Leak Testing. Grind the fracture surface (1) with a proper tool. Drill a hole in the cente ...

Crankshaft Balancer Removal
Special Tools EN-652 Flywheel Holder For equivalent regional tools, refer to Special Tools. Install the EN-652 holder (1). Lock the flywheel (2) or the automatic transmission flex plate via the starter ring gear. Remove and DISCARD the crankshaft balancer bo ...