If luxury and off-road capability had a summit meeting, the 2026 GMC Yukon XL AT4 Ultimate would be the final agreement. Finished in bold Onyx Black, this full-size SUV brings a commanding presence with a serious edge. Under the hood, the powerful EcoTec3 6.2L V8 delivers smooth yet commanding performance whether you're towing, cruising the highway, or heading off the pavement. The AT4 Ultimate trim is engineered for capability while still maintaining premium refinement in every detail. The extended XL design provides exceptional passenger space and impressive cargo capacity for family trips or gear-heavy adventures. Inside, Obsidian Rush full grain leather seats with striking red accents create a cabin that feels both rugged and upscale.The Yukon XL AT4 Ultimate is built to handle long drives and rough roads without sacrificing comfort. Its composed ride quality and confident handling make it surprisingly easy to maneuver for a vehicle of its size. Every row offers generous space, making road trips comfortable for everyone on board. You'll also receive the 2-Year/24k Young Auto Group Maintenance Plan, including two years of free oil changes, free tire rotations, and free safety inspections for added peace of mind. Routine service is already covered so ownership stays simple and convenient. Price does not include any dealer installed options/accessories; new vehicle pricing may include rebates and manufacturer incentives and not all buyers will qualify, see dealership for details, and tax, title, and license fees are extra.