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:

Rear Seat Back Bolster Replacement
Rear Seat Back Bolster Replacement Callout Component Name Preliminary Procedures Disable the SIR system. Refer to SIR Disabling and Enabling 1 Rear Seat Back Cushion Bolster Warning: Refer t ...

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 ...

Transmission Fluid Drain and Fill
Draining Procedure Note: The fluid check bolt at the front of the transmission may not be opened. The transmission fluid drained out during the pre-delivery inspection may be re-used. New transmission fluid must be used during servicing work. The transmis ...