GMC's new Sierra Denali Ultimate Edition looks like a truck from the outside but has an interior that rivals the best luxury brands in the world. The Denali Ultimate starts with revised exterior styling, with a sleeker front fascia with dark chrome trim that integrates nicely into the overall lines of the truck. Inside, nearly every surface is wrapped in leather with open-pore wood trim. The headliner is covered in microsuede, with 16-way power-adjustable seats with massage function. Bose provides a 12-speaker audio system, with everything controlled through a 12.3-inch infotainment screen — including GM's Supercruise hands-free tech. The Denali Ultimate rides on 22-inch wheels and adaptive dampers, with power coming from a 420-hp, 6.2L V8 and 10-speed automatic transmission.