Look for a broken wire between the door and door jam. The opening and closing of the doors will eventually break a wire.
Neither of the front windows do anything rears work fine
Still a broken wire that needs to be traced down.
Looking for a Used Grand Marquis in your area?
CarGurus has 7 nationwide Grand Marquis listings and the tools to find you a great deal.
Search Mercury Grand Marquis Questions
Mercury Grand Marquis Experts
Related Models For Sale