=== COMMANDING, LIFTED, DIESEL-POWERED, ONE-OWNER, NONSMOKER, BUILT TO CONQUER ANYTHING! === This 2024 GMC Sierra 2500HD AT4 is finished in Summit White over a Jet Black interior with Kalahari accents, and it has been transformed by Rocky Ridge into a truly commanding heavy-duty pickup. The professional Rocky Ridge build adds: * A 5'' suspension lift * 35'' premium all-terrain tires on 20'' black off-road wheels * Body-color pocket fender flares * Power running boards Underneath, it carries GMC's mighty Duramax 6.6L turbo-diesel and an Allison 10-speed automatic transmission. FOUR-WHEEL DRIVE with a 2-speed Autotrac transfer case and an automatic locking rear differential comes standard on this AT4. Its Traction Select System includes dedicated Off-Road and Tow/Haul modes, so it's ready for snow, mud, trails and heavy trailers alike. === Why Shoppers Buy This Model === The Sierra HD has earned its reputation as one of the most capable and refined heavy-duty pickups on the market. It combines massive towing and hauling ability with a premium, quiet cabin and advanced trailering technology. The Duramax and Allison combination is legendary among serious truck owners for its strength, durability and smooth, confident power delivery. Compared with rivals like the Ram 2500 and Ford Super Duty, the Sierra HD stands out for its upscale interior and impressive trailering technology. Its professional-grade feel makes it a favorite for buyers who tow big and want luxury while doing it. === Automotive Press and Industry Recognition === Reviewers have consistently praised the current Sierra HD for its upscale, high-tech cabin, its effortless Duramax towing performance and its advanced trailering camera system. The AT4 in particular has been highlighted for blending genuine off-road hardware with premium comfort features. Rocky Ridge, part of the Fox Factory family, is a well-established builder of professionally engineered lifted trucks sold through new-vehicle dealers. Its packages are known for transforming factory pickups into head-turning, trail-ready builds while keeping their everyday usability intact. === Warranty === This Sierra currently shows 33,779 miles. This Sierra is STILL COVERED by transferable GMC factory warranty protection, measured from an estimated in-service date of January 2024. * 5-Year/100,000-Mile Powertrain Limited Warranty * Covers the Duramax engine, Allison transmission and drive system through January 2029 or 100,000 miles, whichever comes first. * 5-Year/100,000-Mile Roadside Assistance and Courtesy Transportation * Through January 2029 or 100,000 miles, whichever comes first. * 3-Year/36,000-Mile Bumper-to-Bumper Limited Warranty * Through January 2027 or 36,000 miles, whichever comes first, with about 2,200 miles remaining, so any concerns can be addressed by a dealer while coverage is still in place. To the best of our abilities, we believe the following warranties are still intact and not negated by GM's anti-flip rule, but you're welcome to check with an authorized GMC dealership. Extended service plans are available for owners who want protection beyond these factory terms. === Standard Features === The AT4 is GMC's premium off-road-focused Sierra HD. It pairs rugged hardware with genuine luxury: * Skid plates and red front recovery hooks * A heavy-duty air cleaner * An automatic locking rear differential * 10-way power front seats with memory * Heated and ventilated front seats, plus heated rear outboard seats * A heated, wrapped steering wheel * Bose premium audio * A 13.4'' touchscreen with Google built-in compatibility and a 12.3'' digital driver display * HD Surround Vision * The six-function GMC MultiPro tailgate * A spray-on bedliner with AT4 logo === Installed Options === This Sierra was ordered with GMC's most capable powertrain and top AT4 technology, then professionally transformed by Rocky Ridge. === Ro
