This is on a 91 Firebird. I am trying to get the passenger's side wiper arm off and it doesn't seem like it want to come off. I have to remove it in order to pull up the screen so I can clean down there. Any tips?

 

If I remember right, there's a little piece of metal that you have to slide outwards a little before you can start prying up. Once you slide that out a little ways, you can just use a screwdriver or removal tool to pry the wiper arm upwards.