I just changed the cabin air filter in my 2016 Suburban. Before the filter change, there was the normal noise when the A/C system was on. Now, there is a HORRIBLE humming sound coming from the vehicle. It is so loud, that you can hear it outside of the vehicle. I popped the hood and you can hear it near the passenger side firewall, sounds like a sucking sound. I read on here where debris can fall into the system when you change the filter, so I checked that. Nothing. The noise began instantly after changing the cabin air filter. What have I done to my Suburban? It makes it miserable to drive now.