I did not want to do it ,but I did.
 

I did not want to do it, but I did. Took my truck to the dealership today.I do not like that place,but it was 99 degrees here and my A/C fan was not putting out very much air. Low air flow through vents. Normally I would fix this type of thing myself. I was sure the inside/outside door was jammed or broken.
Under warranty ,in three hours it was fixed by replaceing the Recirulation housing -air inlet door.
Now I am back to pushing a lot of air at 40 degrees ,like when it was new.
It sure was nice driving home to night.