GMC Yukon SLE 1999 Automatic Gasoline mileage: 300 KM or more SLE 1999 Automatic transmission Gasoline Peace, mercy, and blessings of God be upon you GMC Yukon 1999 The vehicle is clean, renewed, and inspected, ready for transfer. It has been serviced and the spark plugs and spark plug wires have been changed. By the grace of God, the engine has no issues.