Check your front shaft, see if the boot at the rzeppa on the case is ripped, if so hold the companion flange at the case and then hold the shaft and turn them opposite of eachother and see if you have opposing movement, if so that is most likely your problem and you need a new rzeppa head.
If so visit your local driveline shop and have them change that rzeppa
1995 Jeep gc ltd, 2005 Jeep gc ltd , 71 Dart, 73 RR 440-6pk, 78 Mag GT, 85 Power Ram W-350, 92 Daytona, 99 Dakota, 08 Ram 2500
Less than 8 is like playing with half a deck
Long Island Motorsports Association