Onyx Black 2018 GMC Yukon XL SLT RWD 6-Speed Automatic Electronic with Overdrive EcoTec3 5.3L V8 Yukon XL SLT, 4D Sport Utility, EcoTec3 5.3L V8, 6-Speed Automatic Electronic with Overdrive, RWD, Onyx Black, Jet Black Leather, 4-Wheel Antilock Disc Brakes, 5 Auxiliary 12-volt Power Outlets, Black Assist Steps w/Chrome Strip, Enhanced Driver Alert Package, Forward Collision Alert, Hands Free Power Liftgate, Heated Leather-Wrapped Steering Wheel, Inside Rear-View Auto-Dimming Mirror, IntelliBeam Automatic High Beam On/Off Headlamps, Lane Change Alert w/Side Blind Zone Alert, Lane Keep Assist w/Lane Departure Warning, Low Speed Forward Automatic Braking, Memory Package, OnStar 4G LTE, OnStar Basic Plan For 5 Years, Open Road Package Discount Not Desired, Passive Entry System, Power Release 2nd Row 60/40 Split-Folding Bench Seat, Power Tilt & Telescopic Steering Column, Power-Adjustable Pedals For Accelerator & Brake, Preferred Equipment Group 4SA, Premium Smooth Ride Suspension Package, Push Button Keyless Start, Rear Cross-Traffic Alert, Remote Keyless Entry, Universal Home Remote.