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
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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