Why dose my drivers side blow cold air and the passengers side hot?

1998 BUICK REGAL
13,600 MILES
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MAMAMEECHELLE
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When I term on the heater the passengers side blow out hot air. But the drivers side dose not blow hot air out. Sometimes when I hit a bump my fan starts to make a loud noise and to get it to stop i have to turn the heater all the way off. We have changed the cabin air filter.
Dec 18, 2011 at 4:31 PM
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RASMATAZ
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Could be a vacuum or an actuator problem-open it up and investigate
Dec 18, 2011 at 4:38 PM
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WRENCHTECH
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Do you have both driver and passenger temp controls?
Dec 18, 2011 at 5:16 PM
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