No hot or cold air blowing

Hello, since you don't seem to have any air temperature change at all, it at first sounds like it could be related to temperature control functionality inside the vehicle. Check here - the climate control system should be checked to ensure the temperature blend doors are moving as they should be. If they are not, a deeper dive will be required in this area to find out the source of the problem. You could also have a refrigerant system related problem under the hood, or an engine temperature concern preventing proper heat generation. Too hard to tell until testing hands on is performed. www.repairpal.com/repair-shops