OK, so I have this vibration/shake coming from the underside of my Jeep. When I get to about 50mph the Jeep will vibrate/shake, not violently but bad enough to not want to drive 50mph or higher. The wheels and tires have been road force balanced and even changed to different wheels and tires and that didn't help. Front drive shaft and drag link was removed/changed and that didn't help either. I have a Metacloak 2.5 lift with Falcon 3.3 shocks, Dynatrac ball joints, Yeti smart steer and drag link as well as all upper and lower adjustable control arms. The Jeep only has about 20,000 miles. Going to try and change out the rear drive shaft and see if that does anything to help. Anyone have any suggestions??

 

You are on the right track, eliminating items. Is there any excessive play in the yoke on the axles or transfer case? Check your unit bearings for play. Is the transmission mount tight?

 

Going to look at all what you mentioned this week when I can get it on a lift