Google "driveline shop" its always nice to find a shop that specializes in Jeeps however gears are gears so I would not be overly concerned if I find a shop that specializes in driveline repairs with my Jeep.
If you don’t use ESS there is really no good reason to keep the auxiliary battery in the electrical system, there is a proven downside to the much smaller auxiliary battery failing and taking the primary battery with it. My two cents.
Just to be clear if you pull fuse 42 and disconnect the negative cable to the auxiliary battery you should do nothing else. If you want to physically remove the auxiliary battery then you need to add a jumper between N1 and N3 or bolt the two positive cables on the auxiliary together.
I have a 2022 Mojave with the original batteries, and I am wondering if I need to change them before the upcoming Wisconsin winter and if so, do I replace the auxiliary battery or delete it. I do not use the ESS
So I recently had Dana Spicer 5.13 gears put in by a shop that specializes in drive train work. I have around 400 miles on them and absolutely no noise or concerns. The owner and guy that installed them said that everything looked fantastic with the install and I did not need to come back after...