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:

Delayed Locking
This feature delays the actual locking of the doors until five seconds after all doors are closed. Delayed locking can only be turned on when the Unlocked Door Anti Lockout feature has been turned off. When is pressed on the driver or passenger door power lock switch while the door is open, ...

Turbocharger Installation
Special Tool EN-49942 Holding Wrench For equivalent regional tools, refer to Special Tools. Clean the sealing surfaces. Replace the connect fittings on the turbocharger coolant feed pipe and the turbocharger coolant return pipe. Refer to Turbocharger Disassemble and Turbocharger Ass ...

Fuel Pressure Relief
Special Tools EN-34730-91 Pressure Tester For equivalent regional tools, refer to Special Tools. Warning: Gasoline or gasoline vapors are highly flammable. A fire could occur if an ignition source is present. Never drain or store gasoline or diesel fuel in an open container, due ...