ive seen a lot of posts on this ..my car has cold passenger side ac warm drivers side ac and the rear seems warm as well...im thinking its the the blend door actuator..only question I have is where is it?..i have taken the glove box out found one to the left of the glove box not it looked on drives side found the mode actuator not it...I pretty sure i know where the passenger side actuator is ..but I have no clue where the drivers side blend door actuator is...please help fyi I have chiltons forget it nothing..I also he a caddy service cd nothing either why do they hide a this ac stuff?....checked this forum cant seem to find the location of the actuator checked you tube nothing..please help.. when I finally find it I may take a few pics and post them thanks Blotto