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:

Forward Collision Alert (FCA) System
For vehicles with FCA, this system is intended to help avoid or reduce the harm caused by front-end crashes. FCA provides a flashing visual alert and beeps when approaching a vehicle directly ahead too quickly. FCA also provides a visual alert if following another vehicle much too closely. The ...

SIR Service Precautions
General Service Instructions Warning: When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR Disabling and Enabling . Failure to observe the correct procedure could cause deployment of the SIR components, person ...

Catalytic Converter Heat Shield Replacement (LUV)
Catalytic Converter Heat Shield Replacement Callout Component Name Warning: Refer to Exhaust Service Warning. 1 Catalytic Converter Heat Shield Fasteners (Qty: 4) Caution: Refer ...