Greetings all, over the last week or so I have noticed a humming that seems to be generated by the drive train, the front I think. The hum starts at 60mph or so, and seems to be prevelent when there is little load, like when cresting a hill and coasting... Any ideas what this might be ? I am nearing 100k..... Was thinking possibly U joints ? I had all the drive train (diffs transfer case and tranny) fluids serviced about 8k ago..