2016 Chevrolet Traverse stability control problems

I was driving my 2016 traverse after a cancer treatment home when all of a sudden msgs on my dash started appearibg. Service stabilitrak, traction control off. The car started shuttering and the guy behind me rear ended me with my children in the car. Since then I have put 2 power steering pumps in, and had it st the shop for several times that it had said about servicib srabilitrak. I have read over 300 hrs of complaints gaving the same issue with the stabilitrsk. I have also replaced speed sensors and modules.

Stabilitrack message comes on and reduced power for no reason. Loses power instantly and have to pull over. Turns back on and check engine light still on, but can drive as normal until I turn it off and who knows when it comes back. Several times has acted like it is stuck in 4th gear while in drive. Reverse is okay. Other times it has not started, at all. I brought it in and dealership said it was battery. Replaced it, then worked ok for couple days, then same problems started showing back up.