ABS light, etc on

A friend has an 06' GT that only has 7000 miles on it. He told me he was driving it and got on it a little then the ABS, Traction Controll and Low break fluid lights are now on. Does anyone have any suggestions on what it might be. The Dealership is trying to sell him a MC, ABS module and RR wheel speed sensor. The only TSB available says something about grounds and the proceedure has already been done to this car. I work on old stuff and am not too familiar with ABS systems. Thanks in advance.