It happened to me this weekend! Popped out of 4Lo, Rev'd like a banshee!. I cycled from Drive to Neutral then back to drive. It rev'd back to normal. Engaged 4Lo and went on.
I have a D13. Pulling with a 2020 max tow 2.5" MC lift with Airlift airbags. Trailer Upgrades in order.
1. Monroe Shocks
2. New FeLion batteries, Installed Battery monitor.
3. Ark 750 Jockey wheel
4. Ark Corner Steadies
5. Replaced Triangle A/T with Rocky Mountain A/T's. (The stock tires...
https://tfltruck.com/2019/05/the-2020-jeep-gladiator-takes-on-the-worlds-toughest-towing-test-fully-loaded-super-ike-s-3-ep-1-video/
It can be done. Just not preferred.