1997 K3500 Weak Defrost On Drivers Side.

wirlybird

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I have found that the drivers side defrost is very weak. Passenger side is normal or good.
I have not started to investigate yet as I don't want to blindly take stuff apart when it might be an easy fix!

Fan motor does make a little noise when running but it is faint.

Thanks for any suggestions where to look.
 

GoToGuy

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Sep 16, 2020
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Are the hvac mode doors moving to correct positions? All the way not partially. Any obstructions in vent tubes, something fall in?
 
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