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Gm Tech (Cam)
Gm Tech (Cam), GMC Mechanic
Category: GMC
Satisfied Customers: 1685
Experience:  GM Grand Master Technician 2007. 14 year experience.
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GM Yukon Denali: I have a 2007 GMC Yukon Denali. The front

Customer Question

I have a 2007 GMC Yukon Denali. The front ac vents don't throw out any air. But the rear ac vents do throw. The air that does come out through the rear vents is not cold air.I checked the AC compressor. The clutch is being engaged. So the compressor is working. Could the problem be the "Blend Door Actucator?
Submitted: 2 years ago.
Category: GMC
Expert:  Gary replied 2 years ago.
I am very sorry for the long waitis this a duel front heater AC control system in this truck ? is the controller an automatic or manual controller in this truck ?is this an issue where there is NO air flow out of any of the front vents or floor or defrost ?