2026 GMC Sierra 3500HD AT4 Crew Cab 4WD

Experience the ultimate in power, capability, and style with the 2026 GMC Sierra 3500HD AT4. This exceptional heavy-duty pickup is engineered to conquer any terrain, whether you're tackling the toughest jobsite or exploring the great outdoors. Boasting a commanding presence, the Sierra 3500HD AT4 is equipped with a Duramax 6.6L V8 Turbodiesel engine that delivers an impressive 470 horsepower and an astounding 975 lb-ft of torque. Paired with a smooth-shifting 10-speed automatic transmission and robust 4WD system, this truck is ready to take on any challenge with ease. - Duramax 6.6L V8 Turbodiesel engine - AT4 Premium Plus Package - Power-Retractable Black Assist Steps with LED Lighting - Body Color Wheel Arch Moldings - Snow Plow Prep/Camper Package The Sierra 3500HD AT4 also comes loaded with a host of premium features that elevate your driving experience, including a Bose Premium 7-Speaker Sound System, Universal Home Remote, Off-Road Suspension, and a Power Sunroof. The Multicolor 15" Diagonal Head-Up Display and Auto-Dimming Inside Rearview Mirror with Camera provide enhanced visibility and convenience, while the Hill Descent Control and Off-Road High Clearance Step ensure you can conquer any terrain with confidence. Whether you're hauling heavy loads, towing a trailer, or exploring the great outdoors, the 2026 GMC Sierra 3500HD AT4 is the ultimate heavy-duty partner. Its uncompromising capability, premium features, and bold styling make it the perfect choice for those who demand the best. Experience the power and capability of the 2026 GMC Sierra 3500HD AT4 for yourself. Visit Weirs Buick GMC today and let our knowledgeable team guide you through all the impressive features and options available. We're confident you'll be impressed by this exceptional truck and its unparalleled performance. Why Buy from Weirs Buick GMC? Weirs Buick GMC has proudly served Arundel, Kennebunk, Kennebunkport, and all of Maine for over 65 years. Our dedicated team ensures that whether you're looking to buy, sell, or lease a Buick or GMC in Maine, your experience is seamless and enjoyable. We serve customers from Westbrook, Portland, Augusta, Auburn, Sanford, Portsmouth, and across New England. As your trusted GMC dealer in Maine, we offer competitive pricing comparable to other GMC and Buick dealers in the region. In addition to our wide selection of vehicles, we sell and service Fisher snow plows, ensuring you're ready for Maine's tough winters. Conveniently located on Route 1 in Arundel, we invite you to stop in and see why we've been the go-to dealership for generations. Visit us online at www.weirsbuickgmc.com or stop by today to experience the Weirs difference! Some vehicle images may be digitally enhanced to improve online presentation. These images may not display all cosmetic details. Price includes: $500 - Purchase Allowance. Exp. 04/30/2026

Additional Information

AT4 Preferred Package,AT4 Premium Plus Package,Preferred Equipment Group 4SB,Snow Plow Prep/Camper Package,Technology Package,X31 Off-Road Package,7 Speakers,AM/FM radio: SiriusXM with 360L,Bose Premium 7-Speaker Sound System,Premium audio system: Premium GMC Infotainment System,Radio: AM/FM Stereo with Premium GMC Infotainment System,SiriusXM with 360L Trial Subscription,Steering Wheel Audio Controls,Air Conditioning,Automatic temperature control,Electric Rear-Window Defogger,Front dual zone A/C,Rear window defroster,120-Volt Bed Mounted Power Outlet,120-Volt Instrument Panel Power Outlet,Driver Memory,Memory seat,Power driver seat,Power Front Windows with Passenger Express Up/Down,Power steering,Power windows,Push Button Start,Remote keyless entry,Remote Vehicle Starter System,Steering wheel mounted audio controls,Universal Home Remote,Manual Tilt-Wheel/Telescoping Steering Column,Off-Road Suspension,Speed-sensing steering,Traction control,4-Wheel Disc Brakes,ABS brakes,Dual front impact airbags,Dual front side impact airbags,Emergency communication system: OnStar Services capable,Front anti-roll bar,Front wheel independent suspension,Keyless Open and Start,Low tire pressure warning,Occupant sensing airbag,Overhead airbag,Power Sunroof,Pickup Bed,Brake assist,Electronic Stability Control,Lane Departure Warning System,Exterior Parking Camera Rear,Hill Descent Control,Auto High-beam Headlights,Delay-off headlights,Front fog lights,Fully automatic headlights,Panic alarm,Security system,Unauthorized Entry Theft-Deterrent System,Speed control,2-Speed Active Transfer Case,220 Amp Alternator,Engine Block Heater,Exhaust Brake,Heavy-Duty 80 Amp-Hour Battery,Auto-dimming door mirrors,Black Power-Retractable Assist Steps,Body Color Wheel Arch Moldings,Bumpers: body-color,Front License Plate Kit,Gloss Black Header and Grille Insert Bars,Heated door mirrors,IntelliBeam Automatic High Beam on/Off,LED Cargo Area Lighting,LED Smoked Amber Roof Marker Lamps,Off-Road High Clearance Step,Power door mirrors,Rear step bumper,Rear Wheelhouse Liners,Spray-on Pickup Bedliner with GMC Logo,Turn signal indicator mirrors,Winter Grille Cover,2 Charge-Only Rear USB Ports,2 Charge/Data USB Ports Inside Center Console,2 USB Ports,Auto-Dimming Inside Rearview Mirror with Camera,Auto-dimming Rear-View mirror,Automatic Emergency Braking,Bed View Camera with Two Trailer Camera Provisions,Buckle to Drive,Compass,Driver door bin,Driver vanity mirror,Floor-Mounted Center Console,Following Distance Indicator,Forward Collision Alert,Front Pedestrian Braking,Front reading lights,GMC Premium 13.4" Diagonal Information Display,HD Surround Vision,Heated steering wheel,Illuminated entry,Multicolor 15" Diagonal Head-Up Display,Outside temperature display,Overhead console,Passenger vanity mirror,Premium Front Floor Liners with Removable Carpet Insert,Premium Rear Floor Liners with Removable Carpet Insert,Rear Cross Traffic Alert,Rear reading lights,Rear seat center armrest,Safety Alert Seat,Tachometer,Telescoping steering wheel,Tilt steering wheel,Trailer Camera Provisions,Trailer Side Blind Zone Alert,Trip computer,Ultrasonic Front and Rear Park Assist,Voltmeter,Wireless Charging,Wireless Phone Projection,10-Way Power Driver Seat Adjuster with Lumbar,10-Way Power Passenger Seat Adjuster with Lumbar,Front Bucket Seats,Front Center Armrest,Heated 2nd Row Outboard Seats,Heated Driver and Front Outboard Passenger Seats,Heated front seats,Heated rear seats,Perforated Front Leather Seat Trim,Power passenger seat,Split folding rear seat,Ventilated Driver and Front Passenger Seats,Ventilated front seats,Passenger door bin,Hitch Guidance with Hitch View,Alloy wheels,Wheels: 20" High Gloss Black 8 Spoke Aluminum,Deep-Tinted Glass,Front Rain-Sensing Wipers,Power Sliding Rear Window with Defogger,Rain sensing wipers,Variably intermittent wipers