Two problems related to windshield wiper/washer motor have been reported for the 1997 GMC Sierra 2500. The most recently reported issues are listed below.
While driving in rainy weather front windshield wipers failed intermittently. Dealership was notified, but did not resolve the problem.
While raining windshield wipers will move real slow or they may stop completely. It is an intermittent reoccurring problem. Dealer claims vehicle is not under warranty.