Re: 2014 Overland Buzzer Sound while driving
I'll just confirm that I've also experienced this on my '12 Overland. Mine is a V8, so it's not a V6-only issue. It's only happened when I've been driving pretty darned fast, never below 80 mph (test track, professional driver on a closed course, do not attempt this at home, your mileage may vary).
It sounds like it originates under the left side of the dash. In my case, I don't think it's coming from the speakers. Knock on wood, i haven't had this happen for a long time.