The contact owns a 2022 Chevrolet Traverse. The contact stated that while shifting the transmission into park (P), the vehicle failed to park. The "Shift to Park" message was displayed. Additionally, the vehicle inadvertently and aggressively lunged backward while stopped. The vehicle was taken to the dealer, where the transmission was replaced and repairs were performed on the exhaust system; however, the failure recurred with the vehicle making an abnormal sound while driving. Additionally, the contact stated that her daughter suffered shortness of breath and dizziness while asleep inside the vehicle, which she later received medical attention for. Upon inspection, the contact noticed there was a leak in the exhaust system. The vehicle was taken back to the dealer, and the contact was informed that the exhaust pipe had a leak and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 6,000.