Interesting the answers you get from people that haven't a clue of what they
are talking about. I had this problem with a 96 cavalier. the clutch
assembly shifted. I imagine the wiper assembly in the Buick is about the
same. Mine came out as a unit by removing four screws and the arms. You can
then diagnose the problem. If you are not mechanically inclined you will
need to take it to a reputable service shop or the dealer..
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