Home · 2020 GMC Yukon Denali Xl 1500 · Complaints
What 34 owners told NHTSA about the 2020 GMC Yukon Denali Xl 1500
These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.
2 of 34 complaints match · Fuel system · clear filters
Jun 26, 2024Fuel system
The contact owns a 2020 GMC Yukon. The contact stated that while refueling the vehicle, the fuel filler neck was not allowing fuel to flow into the tank. There were no warning lights illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the fuel filler neck. The contact was informed that the fuel tank filler assembly needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was approximately 42,000.
NHTSA ODI 11596964
Jul 9, 2023Transmission & drivetrainElectrical systemFuel system
Transmission slipping and damage
NHTSA ODI 11531159
Working with the data? Download all 34 complaints as CSV · fetched from NHTSA July 25, 2026