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:

Tread Wear Indicators Description
The original equipment tires have tread wear indicators that show when you should replace the tires. The location of these indicators are at 60 degree intervals around the outer diameter of the tire. The indicators appear as a 6 mm (0.25 in) wide band when the tire trea ...

Air Conditioning System Seal Replacement
Removal Procedure Disassemble the A/C refrigerant components. Refer to the appropriate repair procedure. Note: Cap or tape the open A/C refrigerant components immediately to prevent system contamination. Cap or tape the A/C refrigerant components. ...

Fuel Tank Fuel Pump Module Replacement (Steel Tank)
Special Tools EN-48279 Fuel Sender Lock Ring Wrench For equivalent regional tools, refer to Special Tools. Removal Procedure Relieve the fuel system pressure. Refer to Fuel Pressure Relief. Remove the fuel tank. Refer to Fuel Tank Replacement. Disconnect the ...