hill decent

19 JL 2dr Rubi Going downhill in 4L 1000rpm and holding. Well controlled. Very slow for a few seconds. Steep grade. 1-3mph. Rocky. Its like the brakes release. RPMs climb rapidly. Have to apply brakes. Cycle repeats. Not a smooth typical controlled RPM climb going downhill in any other 4x4.

I have a JLUR with 8 speed auto and just got back from a light test run since getting a mopar 2" lift and putting 35 X 12.50's on and an issue popped up which didn't happen before. When I turned on the hill decent control, it wouldn't give me access to manual shifting. It just showed a D on...