"Discover the ultimate in heavy-duty capability with the 2024 GMC Sierra 3500HD AT4. This rugged and versatile truck is engineered to conquer any terrain, thanks to its powerful Duramax 6.6L V8 Turbodiesel engine and advanced 4WD system. - - TECHNOLOGY PACKAGE - Includes (DRZ) Rear Camera Mirror and (UV6) Multicolor 15"" Diagonal Head-Up Display - ENGINE BLOCK HEATER - ALTERNATOR, 220 AMPS - 6.6L V8 Diesel Turbocharged (Duramax) (B20-Diesel Compatible) (Includes (K05) Engine Block Heater) (470 hp 350.5 kW @ 2800 rpm, 975 lb-ft of torque 1322 Nm @ 1600 rpm) - AT4 PREFERRED PACKAGE - Includes (UG1) Universal Home Remote, (A48) rear sliding power window, (U01) Roof Marker Lamps and (KSG) adaptive Cruise Control - LPO, REAR UNDERSEAT STORAGE composite storage bin and lockable lid, (dealer-installed) - GOOSENECK / 5TH WHEEL PREP PACKAGE -- Hitch platform to accept Gooseneck or 5th Wheel hitch. Includes hitch platform with tray to accept ball, stamped bed holes with removable caps installed and bed mounted 7-pin trailer harness (similar to UY2 harness). This Sierra 3500HD AT4 is packed with premium features that elevate your driving experience, including a Bose Premium 7-Speaker Sound System, SiriusXM with 360L, and a Multicolor 15"" Diagonal Head-Up Display. Stay connected and in control with wireless charging, wireless phone projection, and an advanced infotainment system. Conquer any terrain with confidence thanks to the AT4 Off-Road Package, which includes an HD Surround Vision camera system, Rear Cross Traffic Alert, and Trailer Side Blind Zone Alert. The 2-Speed Active Transfer Case and Off-Road Suspension ensure you can tackle the toughest jobs and adventures with ease. When it's time to tow, the Sierra 3500HD AT4 delivers. The Gooseneck/5th Wheel Prep Package provides the perfect foundation for your heavy-duty hauling needs, while the Integrated Trailer Brake Controller and Trailer Camera Provisions make hitching up a breeze. Experience the ultimate in heavy-duty capability, premium features, and off-road prowess with the 2024 GMC Sierra 3500HD AT4. Schedule a test drive today and discover how this exceptional truck can transform your worksite or adventure."