The contact owns a 2021 Chevrolet Silverado 1500. The contact stated while driving on the interstate at approximately 70 MPH, the vehicle lost motive power. The vehicle failed to accelerate over 35 MPH. The vehicle went into Low-Power Mode. The check engine warning light was illuminated. The driver was able to take the exit ramp and continued driving. The vehicle was taken to the local dealer, where it was diagnosed that the camshaft and cylinder head needed to be replaced. The vehicle was not repaired. The manufacturer was contacted and opened a case. The failure mileage was approximately 91,000.