About a month ago had battery replaced at dealership. When I got my 2012 Acadia that Friday evening i noticed thr passenger front side vents blowing hot air. It's humid Arkansas summer at the time. Called Monday to report issue. They said it was just a coincidence that the blend door actuator was out. 7 yr. ride starting to have things go out. You know once you have it paid for the problems start. Ugh! Anyway, now I notice that there is a knocking/clicking sound coming from the glovebox. When I turn the ac off , the sound stops. Is it possible to have a bad actuator or something the dealership didn't do correctly? Either way, I think it should be on them seeing as they just replaced it a month ago. Any ideas/suggestions greatly appreciated!