ABS/TC Light Problems

My Traction Control Light, ABS light and Service light has been coming on, I've taking it into the garage and they can't seem to find anything wrong with it, i've had both front and back breaks changed and the rotors replaced. The light will go off every so often then come back on with the steering wheel vibrating then the lights come back on.... Any suggestions anyone? PLEASE HELP

Hey, I had the same exact problem with my Sunifre last winter: had the wiring harness for the ABS/TC replaced (it was corroded), and that solved the issue.