Mine was the rear abs or (speed) sensor, it is located on the top left side of the rear diff. It is less than 30.00 at auto zone. If that doesn't fix it you may have to replace one of the front wheel assemblies, they run about 250 for the parts.Find a good shop and have them plug an ABS code reader into it and it will tell you which sensor is at fault. I drove mine around for 4 months with that light on, and as long as it is on you have NO ABS, but your normal brakes should work fine. There is no way to reset the code other than replacing the bad part. Good luck!!!