Saturn Ion 2003......need help and tons of advice!! This past weekend I have had an issue with my vehicle thinking that I am trying to steal it...ugh! Whenever I park the car and proceed to turn it off, all of the indicator needle lock into place and the entire car goes dead. Unable to use remote and when I attempt to place the key back into the cylinder to 'start' the vehicle, nothing occurs. Key is then stuck as it will not turn back past ACC. I have done tons of research and found a way to manually release the key but this doesn't resolve the lockdown. After a moment, the security light will display on the dashboard. I have tried just about everything including jumping the battery, only works until car is turned off, and making sure gear shift fully in 'park'. Have completed all recall notices from GM regarding ignition cylinder and the likes as well as a new alternator, twice. During the last jump, mechanic ran full diagnostics for battery, electrical, alternator and output.