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:

Hood Ajar Indicator Description and Operation
Hood Ajar Switch The body control module (BCM) applies B+ to the hood ajar signal circuit and monitors the voltage to determine the position of the hood. When the hood is closed, the switch is open and voltage remains high. When the hood is open, the switch is closed and the voltag ...

Front Bumper Fascia Tow Eye Access Hole Cover Replacement
Front Bumper Fascia Tow Eye Access Hole Cover Replacement Callout Component Name 1 Front Bumper Fascia Front Tow Eye Access Hole Cover Procedure Using a small flat-bladed tool, release the cover from the front ...

Throttle Body Heater Inlet Hose Replacement (LUW)
Throttle Body Heater Inlet Hose Replacement Callout Component Name Preliminary Procedure Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement. Drain the cooling system. Refer to Cooling System ...