About This GMC Sierra 2500HD

The 2024 GMC Sierra 2500HD AT4X Crew Cab is a heavy-duty pickup engineered for serious towing capability while delivering premium comfort and advanced technology. This example shows approximately 9,000 miles and is finished in Summit White over Obsidian Rush perforated leather. It was delivered new in Texas and later acquired by the selling dealer in 2025. A window sticker is included.
Power comes from the proven 6.6-liter Duramax turbodiesel V8, paired with an Allison 10-speed automatic transmission. This combination is widely regarded for its durability, smooth shifting, and impressive torque delivery. A dual-range transfer case and 3.42:1 e-locking rear differential provide enhanced traction and off-road confidence, while dual alternators and a high-idle switch add utility for worksite or towing applications.
This Sierra is equipped with the gooseneck/fifth-wheel prep package, featuring capped stamped bed holes and a seven-pin trailer harness, making it ready for heavy-duty towing. A receiver hitch, running boards, sliding rear window, and tinted glass add convenience, while halogen headlights complete the exterior setup.
Inside, the cabin is trimmed in Obsidian Rush perforated leather, blending durability with upscale refinement. Heated and ventilated power-adjustable front seats, heated outboard rear seats, and dual-zone automatic climate control enhance passenger comfort. A Bose premium sound system delivers high-quality audio, and a sunroof brings additional light into the spacious crew cab interior.
Riding on 18-inch wheels, this 4WD Sierra 2500HD AT4X offers a commanding presence and robust capability. With its Duramax diesel powertrain, heavy-duty towing equipment, and premium interior features, this 2024 GMC Sierra 2500HD is built to handle demanding tasks while maintaining everyday comfort and refinement.