Our Accident-Free, Diesel-powered 2021 GMC Sierra 2500HD SLT Crew Cab 4X4 with the Premium Pack and Convenience Pack is comfortably in command with a bold Onyx Black design! Motivated by a TurboCharged 6.6 Liter DuraMax Diesel V8 generating 445hp and 910lb-ft of torque connected to a 10 Speed Allison Automatic transmission for top-notch towing and hauling. Confident handling is another advantage in this Four Wheel Drive truck, which combines that Pro Grade capability with premium style, including LED lighting, fog lamps, chrome accents, a MultiPro tailgate, XD Custom alloy wheels, power-folding trailer mirrors, and our package's chrome assist steps and spray-on bed liner. Our SLT cabin brings welcome features to the hardest jobs with our package's leather heated/ventilated front and heated rear seats, full-color navigation, wireless charging, and Bose premium audio system. Even better, all that's complemented by a heated leather steering wheel, cruise control, dual-zone automatic climate control, 12V/120V power outlets, remote start, an 8-inch touchscreen, wireless Android Auto/Apple CarPlay, Bluetooth, and WiFi compatibility. Now that's infotainment! GMC sets a strong foundation for safety with a robust steel frame plus an HD backup camera, hitch guidance with a hitch-view camera, a rear-seat reminder, and our package's parking sensors, blind-zone alert, and more. So add our Sierra 2500HD SLT to your team and take on the world! Save this Page and Call for Availability. We Know You Will Enjoy Your Test Drive Towards Ownership! Proudly Serving the Inland Empire for over 35 Years!