Did you check for wheel seal leaks, and wheel end play? Whats the code? And if both are on, it sounds like a computer issue of some kind. Because the trac light should only be on if the wheel is spinning and go off. (Unless it’s the YAW sensor that set it off)
Try finding the abs computer, unplugging the harness and cleaning with some good electrical cleaner and maybe some dielectric grease when putting it back it. If that don’t do it maybe check the harness for cut or chaffed wiring.
Need to know the code though