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:

Repairing Damaged Wire Insulation
If the wire insulation has been chafed, or broken, enough to show the conductive portion of the wire, and the wire is not damaged, determine the length of insulation that needs to be repaired. If the repair is less than 280?€‰mm (11?€‰in), cut the wire within the damaged area. Then sli ...

Wheel Alignment Measurement
Steering and vibration complaints are not always the result of improper alignment. One possible cause is wheel and tire imbalance. Another possibility is tire lead due to worn or improperly manufactured tires. Lead/pull is defined as follows: At a constant highway speed on a typical straight r ...

Range Selector Lever Cable Replacement
Removal Procedure Set the park brake and chock the wheels. Disconnect the transmission range selector lever cable terminal (1) from the transmission manual shift lever pin. Press the locking tabs inward in order to release the transmission range selector lev ...