Early product many years of the fourth generation GMC Yukon may have brake failures as a consequence of a defective vacuum pump. This Preliminary data communicates a concern with poor heater efficiency and advises dealerships to inspect the heater core inlet and outlet hoses for currently being twisted or kinked. https://californialemonlawcenter.com/lemon-law-advice-for-transmission-faults-with-the-2019-2023-gmc-yukon/