New 2026 GMC Sierra 3500 HD AT4 For Sale Dearborn, MI

Meet the 2026 GMC Sierra 3500HD AT4, a premium heavy-duty truck built to handle serious work and deliver genuine capability. This White diesel powerhouse arrives equipped with the legendary Duramax 6.6L V8 Turbodiesel engine paired with a 10-speed automatic transmission and 4WD, engineered to tackle whatever demands you place on it.- Duramax 6.6L V8 Turbodiesel engine with 470 hp and 975 lb-ft of torque- AT4 Premium Plus Package with power sunroof and premium technology- Gooseneck/5th Wheel Prep Package for heavy trailer capability- HD Surround Vision and Bed View Camera with Trailer Camera Provisions- Multicolor 15 Head-Up Display with GMC Premium 13.4 Information Display- Off-Road High Clearance Step with black power-retractable assist steps- Bose Premium 7-Speaker Sound System with SiriusXM 360L and Wireless Phone Projection- Heated and ventilated front leather seats with 10-way power adjusters and lumbar support- Trailer Tire Pressure Monitor Sensors for enhanced towing confidence- X31 Off-Road Package with 2-Speed Active Transfer Case and Hill Descent Control- 20 High Gloss Black aluminum wheels with all-terrain capability- Heated steering wheel and auto-dimming mirrors with integrated cameras- Automatic Emergency Braking with Forward Collision Alert and Rear Cross Traffic Alert- 220-amp alternator and heavy-duty 80-amp-hour battery for demanding applications- Spray-on pickup bedliner with GMC logo protectionThe AT4 trim delivers off-road credibility with its specialized suspension tuning, all-terrain features, and rugged design elements that signal serious capability. Inside, premium leather seating, dual-zone automatic climate control, and heated rear outboard seats provide comfort for your crew. The comprehensive technology suite includes wireless charging, HD surround vision cameras, and integrated trailer management systems that make complex towing intuitive and safe.Built with the professional in mind, this Sierra 3500HD features a gooseneck or 5th wheel prep package ready for heavy-duty applications. The trailer tire pressure monitoring system keeps you informed about trailer conditions while the hitch guidance system with hitch view camera simplifies connecting and maneuvering. Engine block heater and high idle switch ensure reliable operation in demanding conditions, while the exhaust brake adds control when descending grades with heavy loads.The commanding white exterior, gloss black grille inserts, and LED amber roof marker lamps create an unmistakable presence on any job site or highway. Rain-sensing wipers, automatic high-beam headlights, and comprehensive lighting throughout the cabin and cargo area demonstrate GMC's attention to functional detail. Premium floor liners protect your investment, while the spray-on bedliner stands ready for years of service.Safety systems work quietly in the background, with automatic emergency braking, lane departure warning, and OnStar emergency communication providing peace of mind. The comprehensive suite of cameras and sensors gives you visibility of your surroundings and trailer, making every maneuver calculated and confident.This 2026 GMC Sierra 3500HD AT4 represents a premium choice for those who demand genuine capability, luxurious appointments, and the engineering to back it up. Visit our showroom today to experience the commanding presence and substantial capability this truck brings to your operation. Price includes: $1000 - Buick & GMC Consumer Cash Program. Exp. 08/03/2026