dont buy a module yet.
heres the thing, for the TCS to work, abs needs to be working period. cant really control the wheel speed if you dont have an input for the wheel speed right? what im saying is you need to take care of the abs first and tcs will automatically be fixed.
my suggestion, each wheel would have a magnetic type speed sensor on the back of the brake rotor, remove every wheel and clean the sensor itself. chances are, they are just dirty...
then you can send me a $100 check when its all fixed lol
good luck!!!