Well last year for the couple big snows we got in Tulsa we both ran around in 4Hi and everything left stock. We both tried everything from ORM, trac fully disabled, trac kinda disabled, tow/haul mode, the locker in, 2HI, 4Lo and for going around town with traffic 4Hi with trac on fully and no locker with ORM off was the best. If you need to down shift do it manually don't let tow/haul do it. Now for playing different settings for sure.... 2HI trac off and some manual shifting was needed
with the lock in to help the whole rear slide