Configured only as a 2500HD Crew Cab Standard Bed four-wheel drive, the GMC Sierra HD AT4X is powered by the standard 6.6-liter V-8 gasoline engine (401 hp/464 lb-ft of torque) or the venerable 6. ...

2024 GMC Sierra 2500 and 3500 HD First Look: Denali Goes Ultimate, AT4X Joins the Ranks. An upgraded Duramax engine, all-new interior, and impressive tech suite anchor GMC’s new heavy-duty.

Check out a photo album of 2024 GMC Sierra 2500HD Denali Ultimate pictures. ... The interior is appointed in full-grain leather and the Alpine Umber colorway specific to the Denali Ultimate.

2021 GMC Sierra 2500 HD AT4. Kyle Edward. A Truck Built for Towing: The 2500HD 6.6L gas can tow up to 16,620 pounds via gooseneck, plus it gets a wide range of new features to make towing safer, too.

Read our full 2025 GMC Sierra 2500HD review for pros, cons, pricing, and expert insights. Our editors test drive over 200 vehicles a year to help car shoppers pick the right vehicle for them.

2024 GMC Sierra HD: New Tech, New Interior, Same Mission. By Aaron Bragman. ... with GMC now saying the Sierra 2500 2WD crew-cab long bed will be able to tow up to 21,900 pounds via the gooseneck ...

2024 GMC Sierra 2500 HD Denali Ultimate. Interior close-up shot of the GMC Sierra 2500 HD Denali Ultimate center console and wireless phone charger.

GMC calls this interior color Obsidian Rush, and it will be exclusive to the Sierra 2500HD AT4X. Even if these are off-road-specific trucks, the GMC nameplate suggests a level of luxury above the ...

2024 GMC Sierra 2500 HD AT4X AEV: What We Think. ... Once you free solo your way inside, you’ll find the Sierra 2500 HD AT4X interior to be comfortable and (extraordinarily) capacious. The ...

Of course, you don’t have to spend that much on a GMC Sierra 2500 to get this kind of capability. The truck starts at just a bit more than $46,000 for a bare-bones, RWD, single-cab long-bed ...