The dealer came to my house, dropped off a loaner and drove back my Jeep to check out the source of the noise. Turns out two techs and my salesman didn't hear the noise (like the ringing of a bicycle bell) on test drives. See this thread for more info:
2014 Overland Buzzer Sound while driving
And this STAR tech bulletin:
Jeep Garage - Jeep Forum
They told me that I did not have the bracket as described in the bulletin that was making the noise. They returned the car to me. That was last week. The noise has not come back since. It is strange because my wife and I would consistenly hear the noise when driving about 30-40mph. I think the driver from the dealer who picked up the car may have fixed it, since I did tell him what was going on and he seemed like this was not new information. That or they fixed it but didn't want to admit that something was up on a brand new Overland.
Unfortunately, more to this story. My wife is at the dealer right now because when driving this past weekend, the instrument panel went blank. All gauges were at zero and nothing- no spedometer or anything. Very scary since it happened while driving with my two-year old son. We pulled over, turned off the car, turned it back on, still nothing. Repeated the process, still nothing. We drove to my son's swim lessons. I called the dealer and warned them that we would be bringing the car right by- not very happy.
We went to the swim lesson, and came back out an hour later. Now the instrument panel was working. Still drove to the dealer. We talked to them and expressed concern about safety, the fact this is a brand new expensive car, etc. We scheduled an appt on Monday to bring it in. My guess is that when they were looking under the steering column, they must have messed with the connection for the instrument panel. Given people's problems with UConnect, I hope that is the case.
At any rate, I am asking for any updates to UConnect firmware while they check out the Jeep. We've visited the service dept. two times already in the three weeks since we bought it! All said, we still love our Jeep. Cautiously optimistic that everything is OK.
kbre- Our glove box does open slowly, so I don't think that was the source of the noise.