I agree with Shiny Lil Detlr.
Well, first, make sure there are no holes behind them. Jump on a 4Runner board to ask. If not, then heat em up and remove with a platic razor blade/fishing line. Clean up the residue with a bug/tar remover. You will most likely need to polish. Here is a couple pics I did for a customer who removed his with a rubber spatulla. I believe this car was a 99, but it had 150k on the clock.
After a wash and clay
After polishing with
Meguiar's SFP
