Tl* the contact owns a 2000 dodge ram 3500. the contact stated that he heard a knocking noise coming from the engine while driving at all speeds. the failure also occurred while stopped. the vehicle was taken to three different repair shops and the contact was informed that the motor needed to be replaced. the vehicle was not repaired. the manufacturer was notified and offered no assistance. the failure mileage was 98,000. the vin was unavailable.