Our H2 has air conditioning w/tri-zone climate controls, but the front passenger side only blows hot air. I can't seem to figure his out? I want to try and have an idea of what it might be before I take it to get fixed.
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2005 Hummer H2
Question: Why does my passenger side AC blow hot air no matter how low the temp is set?
its mostly a blend door problem, they cost approx 275.00 each and are easy to change except one. the hard one takes about 5 hrs. i think you are looking at an easy one though for your problem