SLT 2026 New Automatic Gasoline 4WD SLT 2026 New Automatic transmission Gasoline 4WD 2026 Yukon SLT, new category for sale, automatic transmission, gasoline, 4WD. 2026 new Yukon, automatic transmission for sale, gasoline, 4WD. GMC Yukon AT4 Ultimate, model 2026, available in black or titanium. Engine with disconnect, 6.2L. Document separated. Night vision system. Massage seats. Projector. Off-road, difficult terrain, hydraulic suspension (raise and lower the car), all-terrain tires. Black and orange interior. 6.2L engine.