GMC Sierra اليفيشن 2021 Automatic Gasoline mileage: 92 KM 4WD Peace be upon you, Sierra model 2021 Elevation. The car is blessed, a sheikh. The body is agency, the engines are guaranteed, and it does not complain of anything. The car has additions: The car is Canadian import, for clarification. New Bilstein 5100 shocks, less than a month and a half old. New King sport springs, less than a month and a half old.