Also had a problem with my low range gear leaver, solved here -- Stuck low range gear.in 100 series. - https://forum.ih8mud.com/threads/stuck-low-range-gear-in-100-series.1215542/page-3#post-14195875
another issue AHC, as always, solved here -- AHC blinking OFF DTC 13, 18, 31, 32, 33, 34, 36, 43...