Originally Posted by Gilley

You should do it yourself because a lot of so called professionals don't know what they're doing or the lights wouldn't be on.

Take off the wheel and look behind the hub. you will see where the speed sensor mounts to a metal bracket onto the hub. Directly underneath the sensor is a ring on the hub. Loosen the one bolt holding the speed sensor bracket to the hub, fix it centered on that ring and retighten the bolt. I went ahead and cleaned the rin too.