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:

Brake Dust Warning
Warning: Avoid taking the following actions when you service wheel brake parts: Do not grind brake linings. Do not sand brake linings. Do not clean wheel brake parts with a dry brush or with compressed air. Some models or aftermarket brake parts may contain asbestos fiber ...

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 ...

Oil Pressure Relief Valve Replacement
Removal Procedure Remove the oil pan. Refer to Oil Pan Replacement. Remove the oil pressure relief valve closure bolt (1). Remove the oil pressure relief valve assembly (2). Separate the piston (3) and the spring (4). Warning: Bod ...