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Q: heating/air conditioning controls on 1997 Buick LeSabre

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My climate control doesn't work all the time, it is stuck on defrost. How do I find the source of the problem? Already checked and replaced all the fuses I could find.
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
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you're climate control module is bad (located behind the glove box and accessed by removing the under dash kick panel on the passenger side. Visually it has a group of colored vacuum hoses all connecting to one area of a black box. It operates with the assistance of vacuum from the motor and you'll most probably need a new vacuum hose assembly with the module. Have a professional diagnose it and replace it. It's sort of a headache to do.
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