I have a 2007 Cobalt that had the ignition replaced under the recall. Since then, I have had intermittent problems with the car not starting. I get power to the accessories, but have no crank, no start. When I finally have get the ignition to crank, it cranks repeatedly before the car will start. Also, after trips on the highway, the ignition and the key are very hot to the touch. The dealership has been of no help whatsoever. Since the problem appears to related to the recall repair, no one else will touch it. Ideals?