The contact owns a 2022 Chevrolet Silverado 1500. The contact stated while driving at an undisclosed speed, the tailgate latch independently unlocked. The contact stated that the failure had occurred whenever the latch became wet from rainfall. In addition, the contact stated property was lost off the back of the vehicle due to the failure. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The dealer was made aware of the failure but provided no assistance. The manufacturer was made aware of the failure but provided no assistance. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 26,000.