When I am going through the gears, when I go from 4th to 5th, and 5th to 6th, there is a vibrating hum sound for a short period when I let the clutch out. Any ideas or comments? I think it might me the clutch but I wanted to get an idea from some more expierenced diesel guys. I hope I posted this in the right spot, if not, I am sorry.

 

Doues your clutch petal vibrate? if you are going down the road and you rest your foot on the clutch pedal with little pressure, it there a vibration?

If so then is is your throw out bearing.

 

No vibration. I just hit 10,000 mi and it kind of ticks me off to have any kind of an issue this early in my trucks life! Any other ideas?