When I’m coming to a stop in my truck right before it stops all the way kicks it back really quick why is that that

Hello, I can imagine bucking, but reverse gear? That would be highly abnormal. Hands on testing would be definitely needed to verify what commands are happening and why the "reverse" gear is selected so the concern can be resolved. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops