GMC Sierra 2021 Gasoline mileage: 78 KM GMC Sierra 2021 gasoline Mileage: 78 GMC Sierra AT4 2021 used for sale Automatic transmission Gasoline Mileage: 78 4WD For sale GMC AT4 full option highest trim 2021 - Body is original - Engine is original - Mileage only 78 thousand - First owner - 2 original keys - Original spare tire has not been used The car is in rare and very clean condition Renewed and inspected, and does not require any costs or expenses