Table 1 shows one common gasoline fuel system related problems of the 2021 GMC Sierra 1500.
| Problem Category | Number of Problems |
|---|---|
| Gasoline Fuel System problems |
The contact owns a 2021 GMC Sierra 1500. The contact stated that after driving on a trip, the contact noticed that the vehicle had lost 10 mpg after a software update was performed. The check engine warning light was illuminated. The vehicle was taken to richardson Chevrolet (3825 s huron rd, standish, mi 48658), who confirmed that the vehicle was working as designed. The check engine warning light was reset. The vehicle was not diagnosed or repaired. The manufacturer was contacted and opened a case, and referred the contact to the NHTSA hotline for assistance. The failure mileage was approximately 57,000.