2026 GMC Yukon XL AT4

The 2026 Yukon XL is GMC's largest SUV, a three-row full-size that prioritizes passenger space and towing capability for big families. It goes head-to-head with the Chevrolet Suburban, Ford Expedition Max, and Jeep Wagoneer L in the extended-length SUV segment. The Yukon XL feels substantial on the road, with confident straight-line stability and a commanding view over traffic. The ride is generally composed for a vehicle this size, though the independent rear suspension helps smooth out rough pavement. Inside, the cabin offers generous space for eight, with a cavernous cargo area behind the third row and upscale materials on higher trims. Choose the AT4 if you want the Yukon XL's off-road readiness without stepping all the way up to the Denali's luxury focus. It gets the same 3.0L I6 diesel as the Elevation, wrapped in a more rugged package. The 3.0L I6 diesel paired with the ten-speed automatic and four-wheel drive delivers strong low-end torque for towing and trail use, while returning better fuel economy than the gas V8s in the range. Standard four-wheel drive and an off-road-tuned suspension with skid plates mean the AT4 tackles dirt and gravel better than the Elevation, without sacrificing the XL's 8,200-pound towing capacity.