I took my 2020 Ram 1500 Laramie Longhorn 5.7 Hemi E-torque to the dealer today for vibration in the floor, the pedals, and the steering wheel. It seems to be worse when it is cold and when in 4wd auto. The dealer said it is exhaust drone vibration and that it is normal. I have been driving for 25 years and never had a vehicle with this problem. I traded in a 2017 F150 and never once had this problem so I cannot understand how it could be normal. I asked to have a supervisor ride with me in my truck and a new one to see if it does the same. I have an appointment to do that next week. Is this a problem that others have had and is there a known fix?