=== POWERFUL, DIESEL-POWERED, FOUR-WHEEL DRIVE, CREW CAB, DENALI ULTIMATE, FULLY LOADED, NONSMOKER, HEAVY-DUTY LUXURY THAT WORKS AS HARD AS YOU DO! === Some heavy-duty trucks are all work and no comfort. The 2024 GMC Sierra 2500HD Denali Ultimate 4WD Crew Cab is built to haul like a workhorse and ride like a flagship, and this Sterling Metallic example, with the odometer hovering around the 39,900-mile mark, pairs an Alpine Umber interior with 20-inch machined aluminum wheels, power retractable assist steps, a 15-inch head-up display and the 6.6-liter Duramax turbo-diesel V8 for a truck that looks as good at the front door as it does on the job site. Under the hood, the Duramax turbo-diesel delivers 470 horsepower and 975 lb-ft of torque through an Allison 10-speed automatic transmission, while a 2-speed active electronic Autotrac transfer case and a trailering package with hitch guidance and hitch view make heavy loads feel easy. It is the kind of effortless strength that turns a long haul into a relaxed drive. The history shows steady care. CARFAX reports 13 service records, including a maintenance inspection with an oil and filter change and rear brake pads and rotors at a GMC dealer in August 2025, a fuel filter replacement in October 2024 and another dealer maintenance inspection in June 2026, and the odometer works out to roughly 14,600 miles per year since the Sierra was first delivered in January 2024. === Why Shoppers Buy This Model === The Sierra 2500HD is GMC's heavy-duty pickup, and the Denali Ultimate sits at the top of the lineup with the most luxurious cabin and the longest list of features. Edmunds praises the optional diesel's power, the truck's in-cab tech and towing camera system, the configurable MultiPro tailgate and the wide lineup that includes the AT4 and the Denali. Shoppers typically cross-shop the Sierra 2500HD with the Ford F-250 Super Duty, the Ram 2500 and the Chevrolet Silverado 2500HD. Many choose the GMC for its smooth diesel power, its premium cabin and clever features like the MultiPro tailgate and the HD surround vision camera system. === Automotive Press and Industry Recognition === Edmunds credits the 2024 Sierra 2500HD's optional diesel with 470 horsepower and 975 lb-ft of torque, which it says is 25 percent more low-end torque than the previous year, and singles out the truck's in-cab technology, towing camera system and MultiPro tailgate as highlights. === Warranty === The odometer on this Sierra currently reads 39,950 miles. This Sierra was originally delivered new in Canada in January 2024 and later imported to the United States. GM's published terms say that coverage for imported vehicles may be subject to restrictions, so we have not listed specific remaining factory warranty coverage, and the purchaser should verify current coverage and eligibility with an authorized GMC dealership using the VIN. Extended service plans may be available for buyers who want added peace of mind. === Standard Features === The Denali Ultimate is where the Sierra HD goes all in. A 15-inch head-up display, a 13.4-inch touchscreen with Google built-in, a Bose premium 12-speaker audio system, a 16-way power driver seat, heated and ventilated front seats, adaptive cruise control, power retractable assist steps with LED perimeter lighting, a power sliding rear window, wireless charging and the GMC MultiPro tailgate make it feel like a step above a typical heavy-duty pickup. === Installed Options === This Sierra was ordered with real equipment beyond the standard Denali Ultimate configuration, from heavy-duty hitch preparation to a high idle switch. === Gooseneck/5th Wheel Prep Package === * Gooseneck and 5th Wheel Hitch Preparation * Prepares the bed for a gooseneck or fifth-wheel trailer hitch for serious towing. === Snow Plow Prep/Camper Package === * Snow Plow and Camper Preparation * Prepares the truck for a snowplow or a slide-in camper. === Standalone