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:

Roof Outer Panel Replacement (5HB)
Removal Procedure Warning: Refer to Approved Equipment for Collision Repair Warning. Disable the SIR system. Refer to SIR Disabling and Enabling. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection. Remove all ...

Engine Coolant Fan Replacement (LDE/LUW)
Removal Procedure Unclip transmission cooler lines from shroud if equipped. Unclip radiator surge tank outlet hose from fan shroud. Disconnect the engine coolant fan wiring harness. Note: You stand against driving direction. Unclip the engine coolant fan ...

Ignition and Start Switch Replacement
Ignition and Start Switch Replacement Callout Component Name Preliminary Procedures Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection. Remove the ignition and start switch ...