I have had this jeep for a little over a year ans it has been my dd. About a week ago I noticed that if I accelerate fast or put just the right amount of pressure on the gas pedal, Which is slight, the rear of jeep starts vibrating/shaking. If I let off or give it more it seems to stop. There werent any signs of this beginning to happen it just did overnight it seems. The jeep has a 3" lift and 31" tires but has had those ever since I bought it and I have changed nothing. Any Ideas whats going on or anything that can point me in the right direction?

 

Sounds like maybe a bad Ujoint in the rear driveshaft

 

Just drove it around and it almost seems like there is some wheel hop back there. Bad shocks?

 

It was this! Thanks for the response!!!