Between 1984-1986 my father went through two Cadillacs. It seemed like everything that was motor operated failed, any resevoir that held fluid leaked, and he had a host of electrical problems. He vowed never to buy a GM product again, and never did actually. So I have no idea how current highline GM products are today as far as reliablity is concerned. Like Caddys, Corvettes, etc....
Eric...