Check Engine Light On problems of the 2016 GMC Sierra 2500

While driving at 45mph in the left lane of a major city thoroughfare the engine quit running, power steering and brakes did not work. The check engine light came on when the engine quit running. I was able to get the vehicle stopped but the engine would not start. The vehicle was towed to the dealership where I was told this issue was reported in arkansas, louisiana and tennessee. The dealership reported that shards of metal were found in the fuel injector and the entire fuel system would have to be completely replaced. Additionally I was told the parts are hard to get. The vehicle was purchased new and was 7 months old and had just over 7,000 miles. The vehicle is still sitting at the dealership 10 days later and has not been moved from where it was delivered by the wrecker service. Gm has been notified but no response from gm or dealership management yet as to what caused the engine failure. I occasionally tow a fifth-wheel RV with this vehicle. I no longer feel safe driving the vehicle and would not consider purchasing another until a determination is made on exactly what went wrong.