2020 Cadillac XT4 FUEL SYSTEM, GASOLINE,ENGINE

The contact owns a 2020 Cadillac XT4. The contact stated that upon starting the vehicle, the check engine warning light illuminated. The vehicle was taken to Auto Zone, where it was diagnosed and determined that the EVAP pump (Evaporative Emissions System) was leaking. The vehicle was not taken to the dealer or to an independent mechanic. The vehicle was not repaired. Additionally, the contact noticed that the fuel mileage of the vehicle was fluctuating. The contact stated that the vehicle made an abnormal sputtering sound and delayed starting while pressing the Push to Start button. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was 56,400.