Check a heat shield that may be hanging down on your rear driveshaft and getting kicked up against the floor as it spins. Since the driveshaft is aluminum and the heat shield steel, it could cut through it eventually. There was a TSB on this a while back that affected 2WD KK’s. Anyway that was my first thought.
_________________
2008 Liberty Sport 4x4 Automatic
Jeepin By Al 4" Lift Kit
BFG KO2’s 245/75R16
Full MOPAR skid plates
Rock Lizard Skink Super Sliders
AtTheHelm Front Recovery System & Roof RackM116A3 Trailer build thread: viewtopic.php?f=72&t=77997