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:

Battery Tray Replacement
Battery Tray Replacement Callout Component Name Preliminary Procedures Remove the battery. Refer to Battery Replacement. Unclip the engine control module (ECM) bracket from the battery tray and set aside. Unclip the ...

Engine Block Disassemble
Remove the cylinder head locating (1, 2). Remove the oil pressure switch (1). Remove the knock sensor bolt (2) and the knock sensor (1). Clean the thread. Remove the oil flow check valve (1). Remove the oil pressure rel ...

Intake Air Pressure and Temperature Sensor Replacement
Intake Air Pressure and Temperature Sensor Replacement Callout Component Name Preliminary Procedure Remove the left front wheelhouse liner. Refer to Front Wheelhouse Liner Replacement. 1 Intake A ...