GMC 2018 GMC Yukon XL SLT 2018 GMC Yukon XL SLT SPECIFICATIONS, PRICE & IMAGES Fuel Type: Gasoline Exterior Color: Onyx Black City MPG: 16 Interior Color: Jet Black Highway MPG: 23 Drivetrain: RWD Transmission: 6-Speed Automatic Engine: 5.3L V8 16V GDI OHV Car Features Hot Car Deals! 2020 Jeep Compass Latitude 2016 INFINITI QX50 Base 2020 Ford Edge Sport 2019 Acura ILX Base 2020 Hyundai Palisade Limited 2016 Audi TT 2.0T 2020 Chevrolet Silverado 1500 LT 2020 Honda Pilot EX-L