Transmission vibration 13 speed eaton fuller

Are you sure it’s in Tranny?
Not being there and witnessing I can’t say....
But my gut says ck driveline real closely first
Good luck

 

Has the throw out bearing been greased?

 

Hold the clutch in a little? Do you have any free travel on the clutch pedal? If not, start with getting the clutch adjusted. It shouldn't be engaging by just barely touching the clutch. Or possibly grease your throw-out bearing. I'd do both if it was me.

 

Where you adjusted the clutch, up under the truck on the bottom side of the transmission anytime I greased a throw out bearing it was right up in there. You will see a grease cert up in that hole. Unless they have relocated those fittings since the last time I greased one. If there is a remote grease hub where you should be able to grease the throw out bearing at that hub or port, it could be something got kinked or cut where it connects to the throw out bearing.

 

Sometimes it will rattle/slight vibration when it’s barely moving like idling moving. It would feel like a slight vibration though. My drivetrain specialist said, transmissions never vibrate.