The contact owns a 2014 Chevrolet Silverado 1500. The contact stated while driving 30-65 MPH, the vehicle was shuddering abnormally. The contact stated that the vehicle had experienced a failure with the torque converter. There were no warning lights illuminated. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 180,000.