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:

Seat Belt Latch Stop Installation
Seat Belt Latch Stop Installation Callout Component Name Preliminary Procedure Locate the hole in the seat belt webbing where the original seat belt stop button was located. If the original hole in the seat belt webbing i ...

Engine Coolant Temperature Sensor Replacement - Radiator
Engine Coolant Temperature Sensor Replacement - Radiator Callout Component Name Preliminary Procedure Drain the cooling system. Refer to Cooling System Draining and Filling. Remove the right front wheelhouse liner. Ref ...

Transmission Adaptive Functions
The 6T30/40/45/50 transmission utilizes a line pressure control system during upshifts to compensate for the normal wear of transmission components. As the apply components within the transmission wear or change over time, shift time (the time required to apply a clutch) increase or decreases. ...