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2004 Chevy Suburban Air Conditioning

My air has dual controls and lately the driver’s side will go blazing hot and the passenger side stays freezing cold. If I turn the car off and back on, it somehow “resets” and all is well. What is going on?

Did a TSB search and your problem is not mentioned. These systems have a diagnostic capability and will set DTC’s you need a TECH2 scan or equivalant.