I removed 5 trail permits off the side panels and some tunnel stickers for my new Skinz rear bumper. This is what I used, wifes hairdryer and slowly peeled them off. then to get any glue residue that stayed I rubbed some WD40 over glue and it came right off.
Then I noticed a bunch of bark scrap marks all over my flat black windshield, sprayed that with WD40 and those cleaned right up also. used blue shop towels (heavy duty paper towels). DO NOT use "Goof off" it will melt your headlight bezel and then you will have "Bobcat" issues. (long story).