The contact owns a 2019 Chevrolet Traverse. The contact stated while driving at an undisclosed speed, the steering wheel failed to function as intended. The contact stated while making a turn, the vehicle lost motive power and independently restarted. The vehicle was taken to the dealer however, the failure was not duplicated. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. In addition, the contact stated that the vehicle was taken to the dealer several times due to the failure. The contact stated that on several occasions, the technician identified the failure while test driving the vehicle; however, the cause of the failure was not documented. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was unknown.