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:

Emblem/Nameplate Replacement
Caution: Refer to Exterior Trim Emblem Removal Caution. The part and vehicle surface should be 21?°C (70?°F) prior to installation. The vehicle should remain inside in a temperature range of 21?°C (70?°F) for 1 hour after assembly to allow the adhesive to develop sufficient bo ...

Instrument Panel Compartment Door Dampener Replacement
Instrument Panel Compartment Door Dampener Replacement Callout Component Name Preliminary Procedure Remove the instrument panel lower compartment. Refer to Instrument Panel Lower Compartment Replacement. 1 ...

Drive Range, First Gear (Gen 1)
As the vehicle speed increases, the transmission control module (TCM) receives input signals from the automatic transmission input and output speed sensors, throttle position sensor and other vehicle sensors to determine the precise moment to deenergize or ?urn OFF?the shift solenoid, and to c ...