u/Apprehensive-Jury615

i have a 2003 vic LX, and it’s making a “whom whom whom “ sound when i brake as well as a back and fourth movement when braking. brakes and rotors were replaced 9/5/25 just got a new transmission as well (the issue was happening before) i’m just wondering if anyone has any ideas. also on a few occasions when i brake in reverse my oil light flashes? strange. i have oil, my oil gasket was also replaced w the transmission. also my first time posting so hopefully you guys understand me.