abs light 1997 4.0 liter auto trans.
 

i dont know where to start.. light goes off when engine is first started stays .off 2 or 3 minutes then comes back on and stays on.. i re worked all the brakes about 5000 miles ago calipers .wheels cylinders. flushed all the fluid i bought the truck new and is has about 70000 miles on it if i could get the light off i wont worry about the abs i know the brakes are all good seems to be a module some place and a sensor any help would be great the module is like 175.00 rebuilt and i dont know if is is bad or not and where its located