1995 Chevy Silverado Z71 Extended Cab 4X4 5.0L
Getting reduced airflow from all settings(defrost,floor,vents ect.)
including AC.The longer it runs the less the airflow gets until there is
hardly any at all.Button that switches between outside air and recirculating
air does not light up if that matters.Everything else seems to work.Checked
Wix website to see if it had a cabin airfilter but they had none listed for
my truck.
  Any guesses,advice or thoughts would be Greatly Appreciated.
                                 Thanks,
                                  Earl