Mechanics

THE DRIVERS SIDE AC GOES FROM BLOWING COLD AIR TO THE HEATER

2005 GMC Sierra • 180,000 miles

It has duel controll Ac for driver and passanger. At times with the ac running it will go from ac to the heater blowing hot air, just on the driver side. I can move the tempeture controll lever up and down but the heater stays on. I have to turn the truck off and back on and the ac will come on again. This is only on the deiver side, the passanger side never does that it works fine
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Bgs1
August 2, 2012.



You'll have to check to see if your actuators are working right or not. One controls temp and another direction so it sounds as if one is screwed up. Generic pic enclosed.


Hmac300
Aug 2, 2012.


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