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:

Air Conditioning Compressor and Condenser Hose Replacement (LUW)
Removal Procedure Recover the refrigerant. Refer to Refrigerant Recovery and Recharging. Disconnect the A/C refrigerant pressure sensor electrical connector. Remove air conditioning compressor and condenser hose nut (1). Remove air conditioning compressor ...

Charge Air Cooler Outlet Air Hose Replacement
Removal Procedure Remove the front bumper fascia. Refer to Front Bumper Fascia Replacement. Loosen the clamp (1) at the charge air cooler outlet pipe (2) to throttle body (3). Disconnect the intake air pressure and temperature sensor harness connect ...

Automatic Transmission Shift Lock Control Description and Operation
The automatic transmission park lock control system is a safety device that prevents an inadvertent shift out of PARK. The driver must press the brake pedal before moving the park lever out of the PARK position. The system consists of the following components: The automatic transmission pa ...