2006 GMC Sierra 2500 HD When ac is on both driver side and passenger side blowing cold air on passenger side and hot air on driver side this system is a dual zone and both sides set at 60 degrees what is rhe issue
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When ac is on both driver side and passenger side blowing cold air on passenger side and hot air on driver side this system is a dual zone and both sides set at 60 degrees what is rhe issue
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