Mechanics

CHEVY AC COMING OUT OF DEFROST VENTS ONLY

2004 Chevrolet Avalanche

Air Conditioning problem
2004 Chevy Avalanche V8 Four Wheel Drive Automatic 68000 miles

yesterday, I replaced my battery. Now, my ac only blows out of my defrost vents. Why?
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Kenezar
September 1, 2010.



First thing to do is pull the hvac fuse for 30 seconds then see if the heater module will reprogram itself. If not the picture that has #1 marked on it is the actuator and that may be stuck or no power coming ot it. see if you can play with it to unstick it.


http://www.2carpros.com/forum/automotive_pictures/406719_actuator_2.jpg


Hmac300
Sep 24, 2010.


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