Would anyone have any ideas on the most likely cause for no matter what position the slider (AC Max, AC, Vent, Heat or Defrost) is in air is only directed at the defrost vents. Maybe a linkage under the dash? The dash was off 2 months ago for some AC work at a shop so I wonder if it might be related to that. They have been good about honoring their warranty but the dash work was a real pain for them. Anyway I don't know the layout under there so ideas are appreciated.
Pat