Question about 1991 GMC Sierra
I have a 2000 GMC Sierra 1500. When first starting the truck the air conditioning works as it should for 5-10 minutes of driving. Then the air blown into the cabin loses its cool feeing and smells stuffy. This happens regardless of the setting for outside or recirculated air.
It sounds like you either have an condensor fan problem or low freon. The condensor fan is near the radiator. In some cases the radiator fan doubles as the condensor fan. So look there too.
Posted on May 09, 2009
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Posted on Jan 02, 2017
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