Climate Control issue

[Fatrusty]

My climate control (2013 LT) seems to has a mind of its own. In the morning as the vehicle warms up the temp is set for 69* and the drivers side vents keep blowing hot air. It starts out cool until it get up to about 90*. The passenger side is normal and remains about 69*. I then use the dual contols set at 69* and the drivers side stays hot. If I lower the temp on driverside to 63* until it starts to cool and then return it to 60* it works fine for about 5 miles and then heat up again. I have to do this a couple of times for it to start acting normal.
This just started this week. I am thinking "blend Door?"

Either way it is still under waranty.. just trying to make sense of this bug.

 

[sumo]

Could be a faulty blend door actuator.

 

[Fatrusty]

Thanks for the info. Never had any issue like this with my 2011 Silverado.
I was also wondering, it seems that there is not that much air through the dash vents when going 70 mph on the freeway. Do the other Tahoes not have much flow?

 

[GM Customer Service]

Fatrusty,

Hey there! I am sorry to hear that you are experiencing an issue with your vehicle. I might not be able to provide you any technical advice but I would be happy to look into this concern for you. Please private message me if I can be of any assistance.

Jennifer T.
GM Customer Care