u/Existing_Judge_4553

So my car started jerking/ bucking and then it threw a code saying my bank 2 cat was bad so I replaced it and put two new o2 sensors on it too but my car still bucked/ jerked and threw another code saying the cat was bad again so I got a new cat and two new sensors and good thick seals but it’s still jerking/ bucking and I’m not sure what is wrong with it. It’s a 2018 Chevy impala premier 3.6L V6