my 94 chevy s10 4.3 v6 two wheel drive truck has an odd problem the ABS turns on from 50mph slowing down to 40mph all the time even if i tap the brake enough to make the tail lights light up it would not be a problem but it pulls hard vering me arround once got pulled over becouse of it P.S befor u tell me to see a mechanic done did they want to replace the hole thing costing more than the truck ( put new brakes on to see if it fixed it didnt cleaned lines didnt help new ECM chip didnt do any thing ither)