Trustworthy and worry-free, this 2026 GMC Sierra 3500HD AT4 lets you cart everyone and everything you need. Trailer Side Blind Zone Alert, Trailer Camera Provisions and trailer viewing software, Tire Pressure Monitoring System auto learn, includes Tire Fill Alert (does not apply to spare tire), Teen Driver a configurable feature that lets you activate customizable vehicle settings associated with a key fob, to help encourage safe driving behavior. It can limit certain available vehicle features, and it prevents certain safety systems from being turned off. An in-vehicle report card gives you information on driving habits and helps you to continue to coach your new driver, StabiliTrak, stability control system with Proactive Roll Avoidance and traction control includes electronic trailer sway control and hill start assist.* Know the GMC Sierra 3500HD is Protecting Your Most Precious Cargo *Seat Belt Adjustable Guide Loops, front row only, Safety Alert Seat, Rear Seat Reminder, Rear Cross Traffic Alert, OnStar Services capable (See onstar.com for details and limitations. Services vary by model. Service plan required.), OnStar Basics (OnStar Fleet Basics for Fleet) Drive confidently with core OnStar services including remote commands, built-in voice assistance, real-time traffic and navigation, and Automatic Crash Response to help if you're in need. (Requires (UE1) OnStar. OnStar Basics includes remote commands, Navigation, Voice Assistance, and Automatic Crash Response, for eligible vehicles with compatible software. OnStar Basics is standard for 8 years; OnStar plan, working electrical system, cell reception and GPS signal required. OnStar links to emergency services. Service coverage varies with conditions and location. Service availability, features and functionality vary by device and software version. See onstar.com for details and limitations.), LED Signature DRL's, Lane Departure Warning (Included and only available with (PDI) Sierra HD Pro Safety.), Indicator-Seat Belt WARNING, Rear Seat (Requires Crew Cab or Double Cab model.), Hitch Guidance with Hitch View with image adjustment, Pan/Zoom/Tilt, Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching, Hill Descent Control, HD Surround Vision provides the driver with an overhead view of the scene around the vehicle on a center stack display. Includes front camera washer., Front Pedestrian Braking (Included and only available with (PDI) Sierra HD Pro Safety.), Front and Rear Park Assist, ultrasonic, Forward Collision Alert (Included and only available with (PDI) Sierra HD Pro Safety.), Following Distance Indicator (Included and only available with (PDI) Sierra HD Pro Safety.), Daytime Running Lamps LED signature lighting, Buckle to Drive prevents vehicle from being shifted out of Park until driver seat belt is fastened; times out after 20 seconds and encourages seat belt use (Included and only available with (PDI) Sierra HD Pro Safety), Bed View Camera camera in the CHMSL to show a view of the cargo bed, display located in infotainment screen, includes Two Trailer Camera Provisions.*Fully-Loaded with Additional Options*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)., REAR AXLE, 3.42 RATIO, GVWR, 12,100 LBS. (5488 KG) WITH SINGLE REAR WHEELS, 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)., ENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-DIESEL COMPATIBLE (470 hp 350.5 kW @ 2800 rpm, 975 lb-ft of torque 1322 Nm @ 1600 rpm) (Includes (K05) engine block heater.), Wireless Phone Projection for Apple CarPlay and Android Auto, Wireless Charging.* Visit Us Today *Test drive this must-see, must-drive, must-own beauty today at Century Buick GMC, 3308 West Hillsborough Ave, Tampa, FL 33614.