GMC Sierra Z71 2015 Automatic Gasoline mileage: 250 KM 4WD Sierra 2015 . Sierra 2015 full option Z71 4x4 . Mileage 250k . The torque converter was changed, and a manufacturing defect was identified and replaced by the agency. . Minor notes, no major accidents. 4 Bridgestone tires. Spare tire is Delop. 5 rims . Modifications. . 40k BTU transmission cooler . Performance transmission thermostat . Performance engine thermostat . BTR Stage 2 cam package with double springs . Cat-back exhaust with BOV and AFE filter . Agency maintenance, changed 3 months ago: . Fuel pump . Oil pump . Performance spark plugs and wires* . Mechanical fuel pump . Engine belt and AC belt . And other maintenance I forgot, by God. The current offer is 55k, selling soon.