Changed the rear wheel bearing on my 2013 Spark and the ABS and Trac control lights immediately came on. The R&R was simple: pulled the tire, removed the drum, removed the axle nut, pulled the old hub/bearing and replaced with a Moog. I purchased ChiltonDIY online manual since couldn't find one in the store. The removal procedure differed in that the manual said to pull the spindle and hub as a unit and then separate them in a vice. Not sure why; I pulled the hub/bearing just fine, and no problem installing the new. Not sure why this tripped the lights. Anyone experience this? Anyone heard of rust loading on the sensor?