Is your car still under the original 4yrs/50k warranty? CPO only takes over after the original warranty expire. If so, the original warranty will cover the pillars. My pillars are doing the exact same thing (although not as bad as yours yet...just a few "bubble" spots), but I have NEVER touched them. I'm gonna have them address the pillars (along with the stupid cup holder clips) next month when I take it in to have my last brake fluid flush under the free maintenance.