Rear Wheel Bearings

[tho98027]

How can you tell if your bearings are going bad? What symptoms have people been experiencing? Recently I've noticed at highway speeds that I have a loud drone. I don't feel any vibration. If I let off the pedal and coast at 65mph the drone goes away, but comes back immediately when I step on the gas pedal. Thought I might be an exaust leak but it's not. While going 65mph I've put the truck in neutral and rev the engine, no drone. It seems like the drone is coming from the driveline. I've already had the front diff tsb done, along with the new rear driveshaft tsb which were completed last summer. So now I am wondering if its my rear wheel bearings going bad or the rear diff. If the rear bearings are bad, what noises would it make? Thanks.

[DawgBonez]

How can you tell if your bearings are going bad? What symptoms have people been experiencing? Recently I've noticed at highway speeds that I have a loud drone. I don't feel any vibration. If I let off the pedal and coast at 65mph the drone goes away, but comes back immediately when I step on the gas pedal. Thought I might be an exaust leak but it's not. While going 65mph I've put the truck in neutral and rev the engine, no drone. It seems like the drone is coming from the driveline. I've already had the front diff tsb done, along with the new rear driveshaft tsb which were completed last summer. So now I am wondering if its my rear wheel bearings going bad or the rear diff. If the rear bearings are bad, what noises would it make? Thanks.

There's no getting around the drone @ 65'ish.... But that is coming from the engine/exhaust and it's given load at that specific speed range....

I could tell when my bearings were going by driving with the window down, next to other vehicles or even better, a wall or fence.... The ABSOLUTE best description of the sound that I can come up with ATM is.... If you take an ordinary wisk(thing you stir eggs with), and scraped it in a circular motion on a skillet or frying pan....<--- why I came up with that I have no idea as I'm not allowed in my kitchen nor in any other kitchen....