Hey you guys I had a 07 Tahoe LT having a problem with my heat at first the driver side went to air now both sides goes in and out from heat to air my control panel doesn't show the right numbers anymore was wondering if that could be the problem

 

My '11 with the auto system has temp. sensors in the HVAC system to control it. A full spectrum scan will read any issues in the HVAC system as codes may be set helping to point to the issue.