2000 Chevy Suburban V8 Four Wheel Drive Automatic 101000 miles
The driver wiper starts working OK but then the wiper begins to swing below the bottom of the windshiled and bangs against the bottom molding of the windshield. I can easily move the wiper arm to place the wiper in any position on the windshield. Shouldn't the arm be stationary and always return to the original set position without going below that point? Is the repair simply to tighthen the nut at the base of the wiper arm? Thanks.