I haven't heard of the software update causing this but I have heard of a few cases of this on Wrangler and GC 4xes. Seems like the cause has been some kind of oil pump in the transmission that is responsible for actuating various clutches? I'd definitely reach out to your service department to at least get that conversation started and, honestly, I'd file a complaint with NHTSA because this is a safety hazard and if there are enough complaints, it can trigger a recall.
I hope whatever software improvements were made to the pre-23 4xes will make their way to the '23 models and that one of those improvements will help smooth out the little bit of herki-jerkiness during engine power applications at slower speeds. I only have 300 miles on the odometer so there could be a bit of transmission learning still needing to be done. It was pretty bad at first (like a kid learning to use a clutch lol) and I have definitely noticed a marked improvement over the last few hundred miles so maybe a few hundred more will be all it needs.
I wonder if the learned parameters got dumped and need to be "relearned" over a few hundred miles? I had an update applied to my 2020 Aisin Cummins and it shifted like a dump truck for about 200 miles until it went back to its regular "soft" shifting.
They’re coming in a few months. My old college roommate is the lead software architect for the Jeep brand. The plan was originally to rollout updates for all model years at the same time, however they changed and decided to integrate the updates for the loss of motive power recalls for many ‘21 & ‘22 models into the update to expedite that. They have not fully completed testing on these updates to the ‘23 models, so they’re doing that now before releasing it to that model year.
