2026 GMC Sierra 2500HD AT4 Crew Cab 4WD

Conquer any terrain and heavy-duty tasks with the 2026 GMC Sierra 2500HD AT4, now available at Sam Boswell Buick GMC. This full-size heavy-duty pickup truck combines off-road capability, advanced performance, and rugged durability with a powerful V8 engine, available Duramax turbo-diesel option, and advanced automatic transmission. The Sierra 2500HD AT4 is designed for demanding work and adventure, featuring available four-wheel drive, best-in-class towing and payload capacity, reinforced chassis, and an off-road-ready suspension with skid plates and locking rear differential. Inside, the spacious cabin offers premium comfort with leather-appointed seating, a large touchscreen infotainment system, Apple CarPlay, Android Auto, wireless charging, and premium audio, making every drive productive, comfortable, and connected. Safety and technology are at the forefront of the 2026 GMC Sierra 2500HD AT4 with advanced driver-assist features including forward collision alert, automatic emergency braking, lane departure warning, blind spot monitoring, rear cross traffic alert, and adaptive cruise control. Additional off-road and convenience features include LED lighting, power tailgate, premium alloy wheels, spray-on bedliner, and bold AT4 exterior styling with rugged accents. If you are searching for a new GMC Sierra 2500HD AT4 for sale near Enterprise, Alabama, Sam Boswell Buick GMC offers competitive pricing, flexible financing options, and a wide selection of new GMC heavy-duty trucks. The 2026 GMC Sierra 2500HD AT4 delivers industry-leading capability, advanced technology, and refined comfort, making it the ultimate choice for drivers who demand performance and reliability. Summit White 2026 GMC Sierra 2500HD AT4 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather, AT4 Preferred Package, AT4 Premium Plus Package, Gooseneck/5th Wheel Prep Package, Heavy Duty Front Spring/Camper Package, Hill Descent Control, Inside Rearview Auo-Dimming Rear Camera Mirror, LED Smoked Amber Roof Marker Lamps, Multicolor 15" Diagonal Head-Up Display, Off-Road Suspension, Power Sliding Rear Window with Defogger, Power Sunroof, Technology Package, Universal Home Remote, X31 Off-Road Package. Recent Arrival! Price includes: $1000 - Purchase Allowance. Exp. 06/01/2026

Additional Information

AT4 Preferred Package,AT4 Premium Plus Package,Gooseneck/5th Wheel Prep Package,Heavy Duty Front Spring/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 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,Front anti-roll bar,Front wheel independent suspension,Keyless Open and Start,Low tire pressure warning,Occupant sensing airbag,Overhead airbag,Power Sunroof,Pickup Box,Brake assist,Electronic Stability Control,Lane Departure Warning System,Hill Descent Control,Auto High-beam Headlights,Delay-off headlights,Front fog lights,Fully automatic headlights,Mobile Service Plus - 3 Years,Panic alarm,Security system,Unauthorized Entry Theft-Deterrent System,Speed control,2-Speed Active Transfer Case,Heavy-Duty 80 Amp Battery,Auto-dimming door mirrors,Body Color Wheel Arch Moldings,Bumpers: body-color,Gloss Black Header Grille 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,2 Charge-Only Rear USB Ports,2 Charge/Data USB Ports Inside Center Console,2 USB Ports,Apple CarPlay/Android Auto,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 Premium Floor Liners with Removable Carpet Insert,Front reading lights,HD Surround Vision,Heated steering wheel,Illuminated entry,Inside Rearview Auo-Dimming Rear Camera Mirror,Multicolor 15" Diagonal Head-Up Display,OnStar Services Capable,Outside temperature display,Overhead console,Passenger vanity mirror,Rear Cross Traffic Alert,Rear Premium Floor Liners with Removable Carpet Insert,Rear reading lights,Rear seat center armrest,Tachometer,Telescoping steering wheel,Tilt steering wheel,Trailer Cam Provisions and Trailer Viewing Software,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 Leather-Appointed Front Seat Trim,Power passenger seat,Safety Alert Seat,Split folding rear seat,Ventilated Driver and Front Passenger Seats,Ventilated front seats,Passenger door bin,Hitch Guidance with Hitch View,in-Vehicle Trailering System App,22" Gloss Black Aluminum Wheels,Alloy wheels,Wheels: 20" High Gloss Black 8 Spokes Aluminum,Wheels: 22" Painted Black Transit Steel,Deep-Tinted Glass,Front Rain-Sensing Wipers,Power Front Passenger Windows with Express Up/Down,Power Sliding Rear Window with Defogger,Rain sensing wipers,Variably intermittent wipers