There may be a little tab you have to pull out on , although that could be the B-body I had. Try and get a towel under the thing you are prying with so you don't scratch the paint. If you're getting ready for paint no as much of a worry. I used a small(tiny 4" long) pry bar and they came off easy. There is a tool for this though.
Good luck, sounds like you are getting ready for paint!
Tom