SLT 1999 Automatic Gasoline mileage: 263 KM 4WD Peace, mercy, and blessings of God be upon you. GMC Yukon, model 1999. The engine is guaranteed and the transmission is guaranteed. Automatic transmission. A clean used car with a smart front screen, full seat covers, clearly visible in the pictures. For more details, send a private message. The car is clean and has no issues. The price is negotiable (for sale to the highest bidder).