home depot sells a great milwalkee heat gun for $19.99. They are in the paint dept. I bought one last month and have used it several time already. Paid for itself on 1 cargo van job. Get the sticker good and hot and it get it started with a plastic blade. Goo gone or a solvent to remove the adhesive. If the stickers have been there a long time, oxidation on the exposed paint will be obvious. If so, time to buff and polish.......