I have a relatively easy problem. How does one take off wiper blade arms from a 2006 Ford 500? I have removed the nut okay, but I am unable to proceed. I need to figure out the source of water that fills the entire floor on the passenger side.

 

Don't know if you already removed the wiper arms or not, but... What I do is place the nut back on until it's flush with the stud. Then lift the wiper arm to it's up position. Then I take a pair of channel locks and put the jaws over the nut and under the wiper arm and squeeze. That should pop the arm loose from the stud.