This 2026 GMC Sierra 2500HD AT4X in Onyx Black represents serious capability paired with refined comfort for those who demand both performance and sophistication in their heavy-duty truck.- Duramax 6.6L V8 Turbodiesel with 470 hp and 975 lb-ft of torque- 10-Speed Automatic transmission with 2-Speed Active Transfer Case- Gooseneck/5th Wheel Prep Package with hitch platform and bed-mounted 7-pin harness- Full Grain Leather seat trim with heated driver and front passenger seats- 16-Way power driver seat with lumbar support and memory- Premium GMC Infotainment System with 15-inch Multicolor Head-Up Display- SiriusXM with 360L and Bose Premium 12-Speaker audio system- Wireless charging and Wireless Phone Projection with Apple CarPlay/Android Auto- HD Surround Vision with Bed View Camera and trailer camera provisions- Automatic Emergency Braking with Lane Departure Warning and Rear Cross Traffic Alert- Engine Block Heater and 220-Amp alternator for reliability in demanding conditions- Power moonroof, 18-inch machined aluminum wheels with high gloss black accents- Ultrasonic front and rear park assist with Hitch GuidanceThis Sierra 2500HD AT4X is engineered for the professional and enthusiast who refuses to compromise. The Duramax diesel engine delivers the torque necessary for serious work, while the integrated gooseneck prep package means you're ready to handle your heaviest trailers without modification. The cab surrounds you with technology that makes long hauls more manageable: the Head-Up Display keeps critical information in your line of sight, the surround vision cameras eliminate guesswork when maneuvering, and the in-vehicle trailering system app gives you confidence with trailer management.The interior reflects a commitment to comfort during demanding work weeks. Full grain leather seats with heating and ventilation keep you comfortable through changing conditions, while the 16-way power adjustable driver seat with lumbar support and memory settings means the cab conforms to you, not the other way around. The climate control system includes automatic temperature zones, ensuring all occupants maintain comfort.Safety and situational awareness are woven throughout this truck. Automatic Emergency Braking, Lane Departure Warning, Rear Cross Traffic Alert, and the Forward Pedestrian Braking system work together to help protect you and those around you. The surround vision system provides views you need in tight work situations, while trailer-specific alerts like Trailer Side Blind Zone Alert recognize the unique challenges of towing.Off-road capability is built into the foundation of the AT4X. The off-road suspension, Hill Descent Control, and 4-wheel independent front suspension give you the ability to handle challenging terrain with stability and control. The 220-amp alternator and engine block heater ensure this truck performs reliably regardless of conditions.This 2026 Sierra 2500HD AT4X is ready to work as hard as you do while providing the refinement and technology you've earned. Stop by to see how this truck can be your partner for whatever comes next.

Options:

Gooseneck/5th Wheel Prep Package,Preferred Equipment Group 4SG,12 Speakers,AM/FM radio: SiriusXM with 360L,Bose Premium Series 12-Speaker 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,Heads-Up Display,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 moonroof,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,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 Battery,Auto-dimming door mirrors,Bed Mounted Assist Handle,Front License Plate Kit,Gloss Black Door Handles,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,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,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,Garage door transmitter,HD Surround Vision,Heated steering wheel,Illuminated entry,Inside Rearview Auo-Dimming Rear Camera Mirror,Leather steering wheel,Multicolor 15 inch 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,16-Way Power Driver Seat Adjuster with Lumbar,16-Way Power Passenger Seat Adjuster with Lumbar,Front Bucket Seats,Front Center Armrest,Full Grain Leather Seat Trim,Heated 2nd Row Outboard Seats,Heated Driver and Front Outboard Passenger Seats,Heated front seats,Heated rear seats,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,Trailer Tire Pressure Monitor Sensors,Alloy wheels,Wheels: 18 inch Machined Aluminum with High Gloss Black Accents,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,ALTERNATOR 220 AMP,AT4X PREFERRED EQUIPMENT GROUP includes standard equipment,OBSIDIAN RUSH FULL GRAIN LEATHER SEAT TRIM,GVWR 11 350 LBS. (5148 KG),TRANSMISSION 10-SPEED AUTOMATIC,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.),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).,WINTER GRILLE COVER,ENGINE BLOCK HEATER,ASSIST HANDLE SIDE (bed mounted; fold out grab handle for extra support),AUDIO SYSTEM 13.4 DIAGONAL PREMIUM GMC INFOTAINMENT SYSTEM WITH GOOGLE BUILT IN APPS SUCH AS NAVIGATION AND VOICE ASSISTANCE includes color touch-screen multi-touch display AM/FM stereo Bluetooth streaming audio for music and most phones; featuring wireless Android Auto and Apple CarPlay capability for compatible phones (STD),SEATS FRONT BUCKET with center console (STD),LICENSE PLATE KIT FRONT INCANDESCENT LIGHTING,REAR AXLE 3.42 RATIO,WHEELS 18 (45.7 CM) MACHINED ALUMINUM WHEEL with High Gloss black accents (STD),EXHAUST BRAKE,ONYX BLACK,Lane Departure Warning,Front Collision Mitigation,Front Collision Warning,Automatic Highbeams,Tow Hitch,Running Boards/Side Steps,Keyless Start,Locking/Limited Slip Differential,Four Wheel Drive,Tow Hooks,Power Steering,ABS,4-Wheel Disc Brakes,Aluminum Wheels,Tires - Front All-Season,Tires - Rear All-Season,Conventional Spare Tire,Sun/Moonroof,Generic Sun/Moonroof,Running Boards/Side Steps,Power Retractable Running Boards,Bed Liner,Daytime Running Lights,Automatic Highbeams,Fog Lamps,Heated Mirrors,Power Mirror(s),Integrated Turn Signal Mirrors,Power Folding Mirrors,Privacy Glass,Intermittent Wipers,Variable Speed Intermittent Wipers,Rain Sensing Wipers,Integrated Tailgate Step,AM/FM Stereo,Navigation System,MP3 Capability,Bluetooth Connection,Auxiliary Audio Input,Smart Device Integration,Requires Subscription,Satellite Radio,Requires Subscription,Premium Sound System,Premium Sound System,Bluetooth Connection,Bluetooth Connection,Smart Device Integration,WiFi Hotspot,Bucket Seats,Leather Seats,Rear Bench Seat,Power Driver Seat,Driver Adjustable Lumbar,Seat-Massage,Power Passenger Seat,Passenger Adjustable Lumbar,Seat-Massage,Heated Front Seat(s),Heated Front Seat(s),Cooled Front Seat(s),Heated Rear Seat(s),Mirror Memory,Seat Memory,Floor Mats,Floor Mats,Leather Steering Wheel,Heated Steering Wheel,Steering Wheel Audio Controls,Adjustable Steering Wheel,Heads-Up Display,Power Windows,Power Windows,Power Windows,Rear Defrost,Sliding Rear Window,Power Door Locks,Keyless Entry,Power Door Locks,Keyless Start,Remote Engine Start,Cruise Control,Adaptive Cruise Control,Universal Garage Door Opener,Security System,MP3 Capability,Auxiliary Audio Input,MP3 Capability,Auxiliary Audio Input,Climate Control,Multi-Zone A/C,A/C,Rear Defrost,Auto-Dimming Rearview Mirror,Back-Up Camera,Front Collision Mitigation,Front Collision Mitigation,Front Collision Warning,Traction Control,Stability Control,Daytime Running Lights,Daytime Running Lights,Driver Air Bag,Passenger Air Bag,Front Side Air Bag,Front Head Air Bag,Rear Head Air Bag,Passenger Air Bag Sensor,Telematics,Requires Subscription,Rear Parking Aid,Back-Up Camera,Aerial View Display System,Back-Up Camera,Front Collision Warning,Lane Departure Warning,Cross-Traffic Alert,Blind Spot Monitor,Driver Restriction Features,Tire Pressure Monitor,Navigation System,Telematics,Requires Subscription