For a few months, the Ram has had a loud, metallic sounding rattling over bumps, coming from somewhere in the engine bay area. Best I could describe it to the dealer was it sounded like a loose brake pad flopping against the caliper. So when I was getting the 911 button issue addressed I had them look at that. I wouldn't have believed it but that noise was actually a mis-adjusted hood bumper causing the hood to smack against the bumper. Dealer showed me what they did to silence it (they knew what it was because apparently they've had a few new Rams come in with the same odd noise). Apparently there's a little plastic film on the hood that the hood bumper snugs up against, and that plastic film had peeled off, causing the chafing. The noise in my opinion didn't match the source, but the rattle is gone, so I guess that was it. In case any of you are chasing a strange rattle you just can't find...