Mechanics

VERY LITTLE AIR COMES OUT OF MY HEATER/AC VENTS

2001 GMC Sierra • 75,000 miles

Very little air comes out of my heater/AC vents, even on the highest speed, in my 2001 Sierra 2500HD truck I just bought. It doesn't seem to make a difference if its on "outside" air or "recirc" air. Any idea what might be wrong?
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Jgreinbold
August 31, 2012.



Check the cabin filter first. If it is badly clogged, air flow would be restricted.

KHLow2008
Aug 31, 2012.