Hopefully someone can help, my 2006 Buick Lacrosse CX with 63,000 well kept miles on it has suddenly started acting up. When you park and turn off the car and lock it up,within a few hours the doors unlock themselves and the front bumper lights as well as the rear running lights come on, and will not shut off. You can open the door and even manually turn the lights from AUTO setting to OFF, but they still will not turn off..The only way to shut them off is to start the car, put in drive move slightly forward then turn the car off again.Then within a few hours it happens all over again??? I discontented the battery for ten min to clear or reset but did not help. The headlamp relay switch was replaced last year under recall and I removed the relay but the lights stayed on.