Originally Posted by alaxfire

You can jack the car up on one side and put it on stands, or jack up just the rear using the jack on the differential and use jack stands.
Then crawl under with a good flashlight and have a peek at the front & rear flex disks, if you see any cracks in them, then they need replacing.

Not too difficult to replace the flex disks.

I hope this is the problem, differentials get REALLY expensive.
Maybe check with MrMopar if you do need a diff ?