Hi guys im new to this for but yesterday on my way to work my truck made this whining noise that got louder with speed and it came out of no where. Well i dont think its the diff but it could be. The noise would go away for the most part when i let off the throttle and i could feel some vibration. As the day went on i went home and it stopped for a while at speeds between 25-40 and then a few miles from home it mad a crazy whirring noise from what sounded like the passenger rear wheel so it leads me to it being a bad drum or wheel bearing hub assembley. Any thoughts guys? Thanks!