One problem related to tank filler pipe and cap has been reported for the 2020 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2020 GMC Yukon based on all problems reported for the 2020 Yukon.
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.