Battery Cable problems of the 2009 Chevrolet Cobalt

It will not let me type in the affected part. It was the ignition. The car was sitting still and the ignition would not shut off. The key cpuld be removed and replaced and could be turned, but it would not shut down. . I had to call aaa to have them come to remove the battery cable, (I had to go online to find out where the battery was located) (because even my aaa did not know where it was. We then had aaa tow the vehicle to the dealership in laurel, MD and they said that the ignition had fallen apart. They put another ignition in, howeve, I wonder if it is out of the same batch that is causeing problems now. They also did something to the electric power steering at the same time.

Could not shut car off when parked. The key would not move lock to shut car off. Could move key forward (to start), but could not move to off. Immediately drove car to dealer. Dealer told me they had to disconnect battery (while the car was running) to shut of the car then proceeded to replace the ignition cylinder. The remarks on dealer repair invoice were " replaced ignition cylinder due to the key getting stuck in the housing and the cylinder blowing up". Note that I consider not being able to shut off a running car extremely unsafe! in case something happens like throttle sticking etc. (don't know if there is any history of throttle sticking on this model yet). Also, generally it is bad practise to disconnect the battery cable on a running engine. This may affect the computer (future safety issue? or future expensive electrical system repairs). Does gm condone this practise at their dealers? dealer used my extended warranty and charged $106. 00 for the deductible to fix this safety item. I found similar 2009 Cobalt ignition issues on your NHTSA website, ref. Odi id's 10364046, 10368042, 10361530, 10394051.