ZERO Luck
We pulled some BIG body encompassing vinyl stickers off or our '97, it was a PITA project. The suggestions I have might include CAREFULLY using a heat gun, None of the myriad of chemicals that we tried was a home run. One morning it was super humid and the stickers peeled off pretty good. The big mess that we still have is on the body side moldings, the adhesive is still on them.
We also took one off in the top of the glass area, and it left a shadow.
Good Luck.