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1998 Chevrolet Blazer

Question: Temperature control only works when set to the highest setting.

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aj916, Valparaiso, IN, May 17, 2010, 14:13
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Unable to regulate temperature. The only setting which works is the hottest setting for heat. The A/C does not work. I checked the refigerant and it is ok. Is the climate control module bad and if so how do I check it before I order a new $250 part from the dealer?

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