I have a 2014 Overland with the heavy duty brakes (120,000 Miles) and both rear calipers have failed. The first one locked up on the way to the airport about six months ago. Today the other did the same thing. When I took the caliper off the piston just fell out. A new one from rock auto is $60 after the core so not a big deal, but has anyone else had the caliper fail?