The contact owns a 2024 Chevrolet Silverado 1500. The contact stated while driving at approximately 35 MPH, the vehicle started losing motive power. The contact stated that the accelerator pedal was depressed; however, the vehicle failed to respond as needed and then stalled. The contact stated there was no warning light illuminated. The contact had the vehicle towed to a local dealer who was unable to duplicate the failure. The vehicle was not repaired. The contact stated that the failure reoccurred. The contact stated that the check engine, 4WD system, and transmission warning lights were illuminated. The contact had the vehicle towed back to the same dealer who diagnosed the vehicle and determined that the transmission valve body needed to be replaced. The dealer informed the contact that the part needed for the repair was on a national backorder. The manufacturer was informed of the failure. The failure mileage was 11,082.