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:

Front Fog Lamp Bulb Replacement
Front Fog Lamp Bulb Replacement Callout Component Name Preliminary Procedure Remove either the left front or right front wheelhouse liner. Refer to Front Wheelhouse Liner Replacement. Disconnect the electrical connector t ...

Rear Side Door Window Regulator Motor Replacement
Rear Side Door Window Regulator Motor Replacement Callout Component Name Warning: Refer to Glass and Sheet Metal Handling Warning. Preliminary Procedure Remove the rear side door window regulator. Refer to Rear ...

Drive Range, Fifth Gear (Gen 2)
As vehicle speed increases, the transmission control module (TCM) processes input signals from the automatic transmission input and output speed sensors, the throttle position sensor and other vehicle sensors to determine the precise moment to command ON the normally-low 35R pressure control s ...