So driving to work I kept hearing a thumping noise from rear end. 1/2 mile later jeep comes to a stop with bad trans. I replaced the trans and take it for a test drive still hearing thud from rear. Almost like something binding. No whines and the thuds are not constant. I can't make it thud even happens at standard speed in flat land. It only happens while moving. Could it be the rear end? Go same time as the trans??

99 4x4 auto

 

If the transfer case (242) is going out would it effect the rear wheels?