When it arrives early next year, Yukon will come in SLE (cloth trim) and SLT (leather appointments) grades, in either two- or four-wheel-drive.Yukon Denali will be a distinct model, said Larson, "with differentiated, exclusive features that elevate its performance and style to an unprecedented level -- including an exclusive 6.2-litre all-aluminum V-8 with variable valve timing and a new six-speed automatic transmission."The "sleeker, taut form" that both will have comes from wraparound front and rear fascias, styled mirrors and integrated running boards that "provide a seamless, contemporary appearance."Larson also said that "craftsmanship is found in elements such as tight tolerances between exterior components and a tuned, wheels-to-the-corners proportion. The wheels are aligned on the same plane as the outer edges of the fenders, giving the vehicle a confident, broad-shouldered stance." The "toned" look on all models comes from a windshield angle of 57 degrees, "which flows gracefully into the roofline. This also improves aerodynamic performance to a segment-best 0.363 coefficient of drag, which helps improve fuel economy and reduce wind noise." Jewel-look lighting elements, wraparound fascias and doors that extend over the rockers are said to "accent the vehicles' precise and refined design elements."