The 2026 GMC Sierra 3500HD AT4 is a true off-road powerhouse, ready to take on any challenge. Boasting a Duramax 6.6L V8 Turbodiesel engine and a 10-speed automatic transmission, this heavy-duty pickup delivers exceptional capability and performance. - Upfitter Switch Kit (5) - Power-Retractable Assist Steps with LED Lighting - Universal Vehicle Module - Dual 220-Amps Primary and 170-Amps Auxiliary Alternators - AT4 Premium Plus Package - BF Goodrich Off-Road T/A KO3 Tires This Sierra 3500HD AT4 is equipped with a host of premium features that elevate the driving experience. Enjoy the convenience of a Bose Premium 7-Speaker Sound System, SiriusXM with 360L Trial Subscription, and Steering Wheel Audio Controls. Stay connected with Wireless Charging and Wireless Phone Projection. For enhanced off-road prowess, the Sierra 3500HD AT4 is equipped with the X31 Off-Road Package, featuring an Off-Road Suspension, 2-Speed Active Transfer Case, and Hill Descent Control. The Gooseneck/5th Wheel Prep Package ensures you're ready for any towing task. Inside, the cabin is designed for both comfort and functionality. Indulge in Heated and Ventilated Front Seats, a Heated Steering Wheel, and a Multicolor 15" Diagonal Head-Up Display. The Premium Front and Rear Floor Liners with Removable Carpet Inserts provide added protection. Safety is a top priority, with features like Rear Cross Traffic Alert, Trailer Side Blind Zone Alert, and Ultrasonic Front and Rear Park Assist keeping you and your passengers secure. Experience the uncompromising capability and premium features of the 2026 GMC Sierra 3500HD AT4. Schedule a test drive today and discover the true essence of power and versatility. Price includes: $1000 - Buick & GMC Consumer Cash Program. Exp. 08/31/2026

Additional Information

AT4 Preferred Package,AT4 Premium Plus Package,Black Badging Package,Gooseneck/5th Wheel Prep Package,Hitch Package,Preferred Equipment Group 4SB,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,Dual 220-Amps Primary and 170-Amps Auxiliary Alternators,Engine Block Heater,Exhaust Brake,Heavy-Duty 80 Amp-Hour Battery,High Idle Switch,Auto-dimming door mirrors,Black GMC Emblems,Black Power-Retractable Assist Steps,Black Sierra Nameplates,Bumpers: body-color,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,Rear Underseat Storage,Safety Alert Seat,Sport Pedal Cover Kit,Tachometer,Telescoping steering wheel,Tilt steering wheel,Trailer Camera Provisions,Trailer Side Blind Zone Alert,Trip computer,Ultrasonic Front and Rear Park Assist,Universal Vehicle Module,Upfitter Switch Kit (5),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,3.42 Rear Axle Ratio,Android Auto,Apple Car Play,Remote Start