My 2005 caddy sts just dies at any time. it could be while idle, highway driving, or in town driving. everything shuts down. no dash lights, no radio, no turn signals, no anything. after about 10 seconds the dash lights up, and says put car in park to start, which I do, and it starts fine. Does anyone have any idea what may cause this? Also, had it checked, and it is throwing no codes.