One problem related to wiper has been reported for the 2001 Cadillac Deville. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2001 Cadillac Deville based on all problems reported for the 2001 Deville.
Window regulators are faulty. When they break the window glass falls to the bottom of the door panel. This has happened twice and is a safety hazard at highway speeds especially in inclement weather. An internet search reveals this is a common problem with Cadillac.