I have had an 01 DeVille DTS for about two years now. It just turned 70k miles. During that time I have replaced the crankshaft position sensor, all of the window regulators, the wheel hubs, the HVAC fan, and just recently, the plenum. In each case I learned through researching this forum mainly that these are considered to be pretty common failings and that I should not be surprised. Does anyone know what other "common" things I should expect to happen so that I can be prepared and possibly do some preventative maintenance and repairs?