Hey out there,1st post.. here goes..i have an 02 Durango sxt 4.7,right now its in dire need of an upper ball joint(pass side) and front pads..earlier today I was on the highway and when I lowered the radio I heard a grinding,dragging sound,i thought I had something stuck in my under carriage so stopped looked and found nothing,took side roads home grindin all the way,if I didn't have to bring my son home I wouldn't have driven it again until I could get a better look.but I had to so when I went to leave the drive way just for the hell of it I switched into 4x4 and it stopped grinding,back in 2 and its still grinding,anyone else had this issue?love to be able to just dive in next weekend and do the ball joints,pads and hopefully not a transfer case...thanks in advance for your time..Greg

 

I was also chasing the grinding. After replacing both CV axles and wheel bearing hubs the grinding was still there. It turned out to be the front drive shaft!

 

+1 on that. Me and a buddy were chasing that same grinding noise on one of our Durango's and after rebuilding the transfer case, and still having the grinding, we found it to be a broken front drive shaft, where the shaft goes into the bearing thing

 

thanks for the response,atleast now I know where to begin looking,hope that's it..thanks again!Greg