Blowing hot air

[Jeff2013LT]

I have 2012 Tahoe . It blows hot air out of vent above radio on passenger side .the dealer replaced the actuator. But drove 5 miles home after picking up and started doing it again. 110 degrees .the techs are stumped has anyone else had this problem.

 

[07burb]

Moved to the proper location and edited title to help better