Question about 1993 Buick Regal
I have 1993 Buick Regal. It has dual controls for the driver and passenger.
When switching to heat for the winter, the driver side vents have heat coming out. The passenger side still has cold air. All of the settings work, Heat, Air, Vent, window vent etc. It is just the heat slide control isn't functioning properly for the passenger side.
I was told that there is some type of door that has to open and close depending on temp that it is set and that the door is probably stuck causing the cool air to come in.
My question is how do you get to this door to free it up.
Thanks in Advance
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