The contact owns a 2022 Chevrolet Silverado. Upon inspection of vehicle, the contact discovered an abnormal design of the vehicle's exhaust pipe. The exhaust pipe had been smashed in and the pipe appeared to be closed shut. The vehicle was taken to an independent mechanic who informed him that it may have been designed that way to ensure safe ground clearance while driving the vehicle. The contact stated that while driving at 65 MPH, they had become nauseous and had temporarily lost consciousness. The contact pulled off the highway and went for a walk to regain composure; the contact did not seek medical attention. The contact believed that the design of the exhaust pipe had caused those symptoms to occur. The contact spoke with the dealer and scheduled an appointment for a diagnostic. The manufacturer had yet to be notified of the failure. The vehicle had yet to be diagnosed. The failure mileage was approximately 3,000.