Turn Signal Switch / Brake light

Sometimes the trouble is actually in the integrated hazard switch, but it sure sounds like you are headed for a new TS switch
That's exactly what happened with my OER replacement switch (put it in when I rebuilt the column) and why I went back to the OEM switch, lol.

Reached out toe Daniel Stern and will be getting a replacement - hopefully the last one for a while! I don't like to time these with oil changes!