About This GMC Sierra 1500 Denali Ultimate

The 2021 GMC Sierra 1500 Denali Ultimate Crew Cab is finished in Satin Steel Metallic with a Jet Black leather interior and equipped with a four-wheel-drive system. Upgraded with the Hennessey HPE650 package, it combines luxury features with significantly enhanced performance and off-road presence.
Power comes from a 6.2-liter EcoTec3 V8 fitted with a Hennessey HPE650 supercharger kit and a Borla exhaust system, paired with a 10-speed automatic transmission, a dual-range transfer case, and a locking rear differential. This setup delivers substantially increased power along with smooth and responsive performance.
The exterior features 20-inch Fuel wheels, a Zone Offroad 6-inch suspension lift, LED headlights, a sunroof, and powered side steps. Additional equipment includes a bedliner and tonneau cover, enhancing both functionality and utility.
Inside, the cabin is trimmed in Jet Black leather with heated and ventilated front seats and heated rear outboard seating. The Denali Ultimate Package adds premium materials and comfort features throughout the spacious Crew Cab interior.
Technology includes a touchscreen infotainment system with navigation, Apple CarPlay and Android Auto compatibility, a Bose premium sound system, and modern driver assistance features, providing advanced connectivity and convenience.
The 2021 GMC Sierra 1500 delivers a strong combination of supercharged V8 performance, luxury refinement, and lifted off-road capability, making it a distinctive and well-equipped full-size pickup.