The ABS light and the Traction Off light are on, I was told that the driver side hub assembly had a sensor that contolled both. I was also told that you cant just buy the sensor. I was wondering if I replaced the hub assembly if that would fix my problem. Has anyone had this problem and what did you do to fix it? Thank you

Before you replace anything, check all the electrical connectors at the wheel sensors. (Not just the driver'*) Clean 'em up, grease with dielectric grease and redo them. If you have a bad front one, it does come with the new hub assembly.