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:

Turbocharger Coolant Return Pipe Replacement (LUV)
Turbocharger Coolant Return Pipe Replacement Callout Component Name Preliminary Procedure Remove the turbocharger. Refer to Turbocharger Replacement. 1 Turbocharger Fastener Caution: Refer t ...

Engine Oil Heater Replacement
Engine Oil Heater Replacement Callout Component Name Preliminary Procedures Raise and support the vehicle. Refer to  Lifting and Jacking the Vehicle If equipped, remove the front insulator cover. Refer to Front Comp ...

Drive Belt Removal
Special Tools EN-955 Locking Pins EN-48488 Holding Wrench For equivalent regional tools, refer to Special Tools. Install EN-48488 wrench (1) to the drive belt tensioner. Note: The drive belt tensioner must always be in a pre-tensioned state. Move the dri ...