We bought a 2018 Jeep Compass Limited all of 7,600 miles ago. So far our only real gripe is a repeating noise while driving. I can't tell if the tranny is downshifting while on the flat or the 4 wheel drive is acting up. To me it sounds like a very deep grinding noise. Sometimes grabbing the shift handle and slapping into a higher gear, assuming the idiot computer will let me, seems to stop the noise, but not always. Is this normal or are we on the way to driving a bottomless pit?