Did you recalibrate? I have no problems and smooth shifting in 4L but I reprogramed my shift point for 35s. Your dealer can do it for you or you can by a programmer.
Took my 4xe Rubicon to run Cedar Tree #13 in Oregon two weeks ago, and had some questions from it.
Put her in 4-Low electric only mode to start the day, and first thing I noticed was it shifted REALLY hard between 1st and 2nd. I'm running 35" tires, but was wondering if anyone else has experienced this? Not sure if it's just the tires with the 4.10 rear gears and 4:1 low transfer case, but wasn't fun. But when I put it in e-save with the engine running, she shifted smooth as can be and ran great.
Also, when trying to run electric a while later, it finally threw a check engine light and forced me out of electric mode altogether, saying the hybrid system needed service. Ran the rest of the trail with the engine running no problem, and after a couple power cycles could run in electric mode again, and CEL went away after a day or two.
Just looking to see if anyone else had a similar experience.