Hey i found a link for you with step by step pictures and literature on how to fix this problem. Apparently it's a common thing with yukon/tahoes. Web site; http://www.fullsizechevy.com/forums/general-discussion/technical-maintenance/313280-tahoe-rear-air-has-no-heat-just-blowing-cold.html. Good luck, hope i helped.
Check your levels first then let me know and i will do some research for you my friend is a service manager at a gm dealer
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there is a control panel in the front that controls the rear heat/ac that is not digital, and the control panel in the rear is digital. I was told it could be the actuator? does that sound right?
Also i need to check the coolant levels again to my knowledge it is full.
Thanks for the respone and I did check the coolant levels and they are full. Any other suggestions? Does an actuator sound right?
is it all controlled by a panel from the front of the cab or does the rear have its own panel. Im leaning towards the panel that controls the heat in the front. Its digital correct?
How is the coolant level
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