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:

Trunk (Sedan)
Warning Exhaust gases can enter the vehicle if it is driven with the liftgate, hatch/trunk open, or with any objects that pass through the seal between the body and the hatch/trunk or liftgate. Engine exhaust contains carbon monoxide (CO) which cannot be seen or smelled. It can cause unconsci ...

Body Lock Pillar Upper Trim Panel Replacement (Hatchback)
Body Lock Pillar Upper Trim Panel Replacement Callout Component Name Preliminary Procedure Disable the SIR system. Refer to SIR Disabling and Enabling. 1 Inflatable Restraint Airbag Cover ...

Brake Rotor Thickness Variation Measurement
Warning: Refer to Brake Dust Warning. Note: Any disc brake rotor that exhibits thickness variation exceeding the maximum acceptable level must be refinished or replaced. Thickness variation exceeding the maximum acceptable level can cause brake pulsation. If the inboard fricti ...