I have a 2006 grand jeep cherokee with a noise coming up from the rear passenger floor as though the driveshaft is hitting it. I replaced driveshaft(rear),transfercase and rear diff. Tranny mount is good and all rear bushings are good. Only makes noise under load

 

Go over and post in the grand cherokee forum. This is for (what the guys at autozone call it) the regular cherokee.

 

"Is that a Grand"?

"No, it's a Cherokee" !