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:

Rear Brake Hose Replacement (Body to Axle - Drum Brake)
Removal Procedure Warning: Refer to Brake Dust Warning. Warning: Refer to Brake Fluid Irritant Warning. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Install ...

Turbocharger Removal
Special Tool EN-49942 Holding Wrench For equivalent regional tools, refer to Special Tools. Install the EN-49942 holding wrench  (2) to the turbocharger coolant feed pipe. Guide a ratchet wrench (1) along with an extension through EN-49942 holding wrench to the turbo ...

Camshaft Cover Replacement
Camshaft Cover Replacement Callout Component Name Preliminary Procedures Remove the ignition coil. Refer to Ignition Coil Replacement. Remove the PCV hose. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replac ...