I have the car in the shop and don't know the exact problem yet but all indication are it's the manifold went bad and water in the engine now. The car over heated and started smoking white smoke out the tail pipes was missing really bad. I shut it off then it would not start. I mentioned the problem to a friend and he said that he had the same problem with his 95 Bonneville and had heard that the manifolds in buicks and pontiacs in the years around 95 and 97 were made of aluminum and are eaten away by the antifreeze over the years. This sure is going to be an expensive repair about 1600.00 I hear.