DRIVING A NEW 97 CHEV K3500 4X4 TOW TRUCK ON ICE WITH A CAR ON THE BACK THIS WEEK ALERTED ME THAT THE ABS IS STILL ON WHILE THE TRUCK IS LOCKED IN 4X4 THE BRAKE PEDAL JUST SINKS (ABS RELEASING THE PEDAL) TO THE FLOOR AS THE ABS COME ON AND ATTEMPTS TO STOP THE... Login to read more.