You guys really provide a wealth of information here. Thanks!

I was having trouble with my rear wiper blades not making contact with the glass.
I came here and did a quick search, went and got a can of WD40 and sprayed the hinge and springs, and then worked the arm back and forth. Problem solved.

If I went to the dealer, I'm sure they would have told me the motor or the arm is messed up and it needs a full replacement.