2500HD 2011 Automatic Gasoline mileage: 138 KM Sierra 2011 pickup truck, single cab, long bed, 8-lug, 4x2. It belonged to Aramco, I am the second owner since 2018. Driven around 138,000 km, not used much. No issues, God willing, upon inspection. All its maintenance was at ACDelco. It was offered for 37,000 and I'm not far from that.