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With only 4 miles on the odometer this silver Denali arrives fresh and ready to tackle whatever lies ahead.<br><br>- Duramax 6.6L V8 Turbodiesel engine with 470 hp and 975 lb-ft of torque<br>- 10-Speed Automatic transmission with 4WD<br>- Max Trailering Package with 3500 HD frame 12\" rear axle and gooseneck5th wheel prep<br>- Denali Reserve Package with power sunroof and Technology Package<br>- Signature Chrome Denali grille with LED perimeter lighting on power-retractable assist steps<br>- Bose Premium 7-Speaker Sound System with SiriusXM 360L<br>- GMC Infotainment System with Apple CarPlay and Android Auto<br>- Multicolor 15\" Head-Up Display<br>- HD Surround Vision with bed view camera and trailer camera provisions<br>- Heated and ventilated front seats with 12-way power adjustment and lumbar support<br>- Forge Perforated Leather front seat trim<br>- Power sunroof and wireless charging<br>- Spray-on pickup bedliner with GMC logo<br>- 220-Amp alternator and engine block heater<br><br>This Denali represents the pinnacle of the Sierra 2500HD lineup combining professional-grade towing capability with premium interior appointments. The Duramax diesel engine delivers the torque you need for serious work or hauling while the Max Trailering Package ensures you're equipped for substantial loads. The cabin reflects Denali's luxury DNA with genuine wood dashboard and door panel inserts perforated leather appointments and precise climate control through dual-zone automatic temperature management.<br><br>Safety and convenience technologies are woven throughout this truck. You'll find automatic emergency braking lane departure warning rear cross traffic alert and trailer side blind zone alert working together to provide confidence on any road. The in-vehicle trailering system app keeps you connected to your trailer while hitch guidance with hitch view simplifies hookup procedures.<br><br>The Sierra 2500HD","additionalProperty":[{"@type":"PropertyValue","name":"feature","value":"Denali Reserve Package"},{"@type":"PropertyValue","name":"feature","value":"Gooseneck/5th Wheel Prep Package"},{"@type":"PropertyValue","name":"feature","value":"Max Trailering Package"},{"@type":"PropertyValue","name":"feature","value":"Preferred Equipment Group 5SA"},{"@type":"PropertyValue","name":"feature","value":"Technology Package"},{"@type":"PropertyValue","name":"feature","value":"X31 Off-Road Package"},{"@type":"PropertyValue","name":"feature","value":"7 Speakers"},{"@type":"PropertyValue","name":"feature","value":"AM/FM radio: SiriusXM with 360L"},{"@type":"PropertyValue","name":"feature","value":"Bose Premium 7-Speaker Sound System"},{"@type":"PropertyValue","name":"feature","value":"Premium audio system: Premiu"}],"image":[{"@type":"ImageObject","url":"https://imgcdn.lotlinx.com/vdn/87086/gmc_sierra%202500%20hd_2026_1GT4UREY2TF233825_87086_2739713331.jpg?ver=20260717","description":"2026 GMC Sierra 2500HD - Primary exterior view","representativeOfPage":true}],"seller":{"@type":"AutoDealer","name":"Step One GMC Fort Walton Beach","slug":"step-one-gmc-fort-walton-beach-fort-walton-beach-fl","telephone":null,"url":null,"address":{"@type":"PostalAddress","postalCode":"32548","addressRegion":"FL","streetAddress":"329 Miracle Strip Pkwy SW","addressCountry":"US","addressLocality":"Fort Walton Beach"},"latitude":"30.4076000","longitude":"-86.6348000","dealerGroup":null,"aggregateRating":{"@type":"AggregateRating","ratingValue":4.5,"reviewCount":2169,"bestRating":5,"worstRating":1}},"stockNumber":null,"slug":"2026-gmc-sierra-2500hd-unknown","dateCreated":"2026-08-12T10:35:01.623Z","dateModified":"2026-08-13T10:34:41.221Z","safetyRating":null,"recallSummary":null,"referenceSpecs":null,"inventoryStatus":"on_lot","estimatedArrival":null,"_raw":{"lot_date":"2026-03-07"},"isFeatured":false,"internetprice":83641,"msrp":null}