Just bought a 1999 Grand Cherokee where the 4wd selector is completely stuck. It has the nv247 transfer case. The Hi mode works just fine, but it is impossible to move the selector to either neutral or 4Lo. The case fluid was recently changed using the mopar speciality fluid. Disconnected the linkage from the TC and it worked fine, so its probably internal.
How to make the transfer case shift again? What to do?