air hot on one side and cold on other on 1999 Oldsmobile Intrigue

my ac is blowing cool air out one side and hot air on the other what r all possibilitys it could be

by in Indianapolis, IN on August 14, 2010
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1 answer
ANSWER by , November 18, 2010
I had same problem on 99 Regal. It is a blend door motor under the dash. This changes the flow of air thru the vents when you adjust it on the dash. I had to have it disconnected. You can then reach up under and twist the knob opening the door maually...but it's a pain to do