I searched for this but couldn't find any threads that applied to my year & model. I have a floppy blade on the drivers side & in my search, I'm pretty convinced that the nut has backed off & the blade arm & the shaft are not aligned correctly as the blade has some movement. What I can't find in my searches is how to get to that black cover off without causing any damage. Any help would be appreciated.

Robin...

 

It just snaps on. Grab it near the wiper arm pivot point and pull up away from the arm. It should pop off. Then pull the nut and clean out the knurls on the stud before putting the arm back on.