limiteddi

It wasn't working at all for some time and lately it started trying to make a full swing but stops half way and bangs back against the plastic. Any clue if there is an easy fix for this?

mtm

See if the wiper arm mounting nut is tight - pull up the cover at the base of the wiper arm and check the nut.

kombifan

The mounting nut probably got stripped or loose and is in the incorrect position

try visiting the local safe lite repair. They can fix this quickly by adjusting the position of the arms.

Forrest Gump 9

I had the same thing happened on my gl550. The bearing in the idler arm blew up, needed to replace the whole wiper assembly. I ghetto rigged it with a 10mm bolt, nut, and couple washers, been working fine for more than a year