GMC Sierra SLE 2012 Used Automatic Gasoline mileage: 1 KM 4WD Peace be upon you. I am offering a 2012 Sierra, turquoise color, for sale. Mileage is 600,000+ kilometers. Engine, gearbox, chassis, differentials, and airbags are in good condition. The body has been fully repainted due to fading. The car is clean, ماشاء الله. Only serious buyers should bid privately, not by phone.