Hey, I had the same problem, mine was the drivers blend door motor. If you stick your head unerneath the steering wheel by the pedels you can see the actuator. Theres a little metal inticator that should move when you change the the temperature, if it doesnt move its the motor. Its a $235 part unless you know someone haha(mine was $105 If you mechanically inclined you should be able to change it in about 30-45 mins, its not hard just hard to get to. Theres two screws holding it in place then a harness plugs into the top. Good Luck!