Hello, replaced hub bearing on 2000 Bonneville. Traction control light stays on until i reach approx 15mph. The old bearing had wore wires on speed sensor and the brake light and traction control light was always off. Do i need to clear a code, or is it possible that i have bad connection?

Once you replace the sensor, the lights should go out automatically. Check over the connection on the the one you replaced, as well as the other ones, just to make sure.