2020 Buick Enclave Fuel System

The contact owns a 2020 Buick Enclave. The contact stated that the check engine warning light was illuminated. The vehicle was taken to an independent mechanic, where the evaporative emission system, vapor canister purge solenoid, and the control solenoid were replaced; however, the failure persisted. The contact stated that the vehicle was difficult to start, and the instrument cluster gauges were fluctuating. The contact stated that the failure had occurred after refueling the vehicle. The contact stated that the failure had progressively worsened. The vehicle was taken back to the independent mechanic, where it was determined that the failure was related to NHTSA Campaign Number: 20V639000 (Fuel System, Gasoline), and the contact was referred to the dealer for assistance. The vehicle was taken to the dealer to be diagnosed. The vehicle was not yet diagnosed or repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 42,000.

TL* THE CONTACT OWNS A 2020 BUICK ENCLAVE. THE CONTACT STATED THAT WHILE DRIVING DOWNHILL AT APPROXIMATELY 75 MPH, THE VEHICLE DECELERATED TO APPROXIMATELY 20 MPH WITH 'CAN NOT SHIFT IN THIS POSITION' MESSAGE DISPLAYED ON THE INSTRUMENT PANEL. THE VEHICLE WAS TOWED TO SOMERSET BUICK LOCATED AT 1850 W. MAPLE RD, TROY, MI 48084, WHO DIAGNOSED THAT THE FUEL TANK SENSOR WAS FAULTY. THE FUEL TANK SENSOR WAS REPLACED HOWEVER, THE FAILURE RECURRED. THE TRANSMISSION SERVICE REQUIRED MESSAGE WAS DISPLAYED ON THE INSTRUMENT PANEL. THE CAUSE OF THE FAILURE WAS NOT YET DETERMINED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 7,100.