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:

Positive Crankcase Ventilation Pipe Removal
Open the 2 positive crankcase ventilation pipe retainer clips (2) and (3). Note: Move retainer clamp (1) in direction of the arrow. Remove the positive crankcase ventilation pipe from the intake manifold. Loosen the charger air bypass val ...

Automatic Transmission Shift Lock Control Function Check
Warning: When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured. Before starting this check, be sure there is enough room around the vehicle. It should be parked on a level surface. Apply the parking brake. Be read ...

Transmission Control Replacement
Removal Procedure Remove the floor console. Refer to Front Floor Console Replacement. Lift both cable adjustment retainers (1), one for each cable, to release the shift lever and selector lever cable. .1 Pull the shift lever and selector lever cable ret ...