GMC Sierra اليفيشن 2021 Automatic Gasoline mileage: 89 KM 4WD Peace be upon you, Sierra model 2021. The car, blessed be God, is a masterpiece. The body is like new, guaranteed. The engine is guaranteed, and it does not complain of anything. If anything contrary to my words appears, I will bear the cost of the inspection. The car has additions: Bilstein 5100 shocks, new, not even a month and a half old. King sport springs, new, not even a month and a half old. KMC tires. Bed light. The car is for sale by offer.