The 2026 GMC Sierra 3500HD Denali represents serious capability combined with refined comfort, designed for those who demand both performance and premium features in their heavy-duty truck.- 6.6L Duramax V8 Turbodiesel with 470 hp and 975 lb-ft of torque- 10-Speed Automatic transmission with 4WD- Denali Reserve Package with premium appointments- Gooseneck/5th Wheel Prep Package for towing versatility- X31 Off-Road Package with hill descent control and off-road suspension- Multicolor 15 Head-Up Display with GMC Premium 13.4 Information Display- Bose Premium 7-Speaker Sound System with SiriusXM 360L- HD Surround Vision with bed view camera and trailer camera provisions- 12-Way Power Driver and Passenger Seats with lumbar support and ventilation- Heated and ventilated front seats with heated rear seats- Wireless charging and wireless phone projection- Premium leather seat trim with genuine wood dashboard and door inserts- Automatic Emergency Braking with Forward Collision Alert and pedestrian detection- Ultrasonic front and rear park assist with trailer side blind zone alert- Power sunroof with spray-on bedliner and signature chrome Denali grilleThis Sierra 3500HD delivers the diesel power you need for hauling and towing with the refinement expected in a Denali. The Duramax engine provides exceptional torque for heavy loads, while the advanced suspension and transfer case give you control in any terrain. The cabin surrounds you with premium materials genuine wood accents, Forge perforated leather, and a comprehensive technology suite keep you connected and comfortable during long drives.Safety features work intelligently to protect you and your passengers. Automatic emergency braking, lane departure warning, and a comprehensive airbag system provide peace of mind. The trailer side blind zone alert and hitch guidance system make towing safer and easier, while the HD surround vision camera system helps you navigate challenging situations.The Technology Package and Premium Equipment Group 5SA bring convenience features that elevate daily use. Wireless phone projection, heated steering wheel, and the GMC Premium information display integrate seamlessly into your driving experience. The power sunroof adds an open-air feeling to the cabin, while ventilated seats keep you comfortable during demanding work.Whether you're managing a heavy load on the job site or towing a gooseneck trailer down the highway, this Sierra 3500HD Denali is engineered to handle it all without compromise. Visit our showroom to experience the commanding presence and capability this truck offers firsthand. Price includes Price includes Dealer discount and GM rebates that all customers qualify for:$2000 - Buick GMC Bonus Cash. Exp. 08/31/2026

Options:

Denali Reserve Package,Gooseneck/5th Wheel Prep Package,Preferred Equipment Group 5SA,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,Polished Exhaust Tip,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,Bed Mounted Assist Handle,Bumpers: body-color,Front License Plate Kit,Heated door mirrors,IntelliBeam Automatic High Beam on/Off,LED Cargo Area Lighting,LED Smoked Amber Roof Marker Lamps,Power door mirrors,Power-Retractable Assist Steps,Rear step bumper,Rear Wheelhouse Liners,Signature Chrome Denali Grille,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,Garage door transmitter,Genuine wood dashboard insert,Genuine wood door panel insert,GMC Premium 13.4 inch Diagonal Information Display,HD Surround Vision,Heated steering wheel,Illuminated entry,Multicolor 15 inch 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,12-Way Power Driver Seat Adjuster with Lumbar,12-Way Power Passenger Seat Adjuster with Lumbar,Forge Perforated Leather Seat Trim,Front Bucket Seats,Front Center Armrest,Heated 2nd Row Outboard Seats,Heated Driver and Front Outboard Passenger Seats,Heated front seats,Heated rear seats,Power passenger seat,Split folding rear seat,Ventilated Driver and Front Passenger Seats,Ventilated front seats,Passenger door bin,Hitch Guidance with Hitch View,Trailer Tire Pressure Monitor Sensors,Alloy wheels,Wheels: 20 inch Ultra-Bright Machined,Deep-Tinted Glass,Front Rain-Sensing Wipers,Power Sliding Rear Window with Defogger,Rain sensing wipers,Variably intermittent wipers,REAR CAMERA MIRROR inside rearview auto-dimming with full camera display,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).,LICENSE PLATE KIT FRONT,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),TECHNOLOGY PACKAGE includes (DRZ) Rear Camera Mirror and (UV6) Multicolor 15 Diagonal Head-Up Display,WHEELS 20 (50.8 CM) ULTRA-BRIGHT MACHINED WHEELS WITH BRIGHT CHROME INSERTS with Black painted pockets (STD),TRANSMISSION 10-SPEED AUTOMATIC,DENALI PREFERRED EQUIPMENT GROUP includes standard equipment,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.),ATMOSPHERE/BROWNSTONE FORGE PERFORATED LEATHER SEATING SURFACES,WINTER GRILLE COVER,TRAILER TIRE PRESSURE MONITOR SENSORS includes set of 4 sensors. Sensor functionality requires (UET) In-vehicle Trailering App to be ordered with the vehicle and installed by the factory. Sensors will be shipped loose with the truck and will need to be installed on trailer by customer. System is capable of monitoring up to 6 wheels. Additional or replacement sensors are available through GM Accessories,ENGINE BLOCK HEATER,ASSIST HANDLE SIDE (bed mounted; fold out grab handle for extra support),SUNROOF POWER,DENALI RESERVE PACKAGE includes (CWM) Technology Package and (CF5) power sunroof,PREMIUM FLOOR LINERS WITH REMOVABLE CARPET INSERT REAR,ASSIST STEPS POWER-RETRACTABLE with LED perimeter lighting and bright accent,REAR AXLE 3.42 RATIO,GVWR 12 100 LBS. (5488 KG) WITH SINGLE REAR WHEELS,PREMIUM FLOOR LINERS WITH REMOVABLE CARPET INSERT FRONT,EXHAUST BRAKE,ONYX BLACK,ALTERNATOR 220 AMPS,SEATS FRONT BUCKET WITH CENTER CONSOLE (STD),MULTICOLOR 15 DIAGONAL HEAD-UP DISPLAY,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-Terrain,Tires - Rear All-Terrain,Conventional Spare Tire,Running Boards/Side Steps,Bed Liner,Daytime Running Lights,LED Headlights,Automatic Highbeams,Fog Lamps,Heated Mirrors,Power Mirror(s),Integrated Turn Signal Mirrors,Power Folding Mirrors,Intermittent Wipers,Variable Speed Intermittent Wipers,Rain Sensing Wipers,Privacy Glass,Rear Defrost,Sliding Rear Window,Integrated Tailgate Step,AM/FM Stereo,Navigation System,MP3 Capability,Bluetooth Connection,Auxiliary Audio Input,Smart Device Integration,Satellite Radio,Requires Subscription,Satellite Radio,Requires Subscription,Premium Sound System,Bluetooth Connection,Bluetooth Connection,Smart Device Integration,WiFi Hotspot,Bucket Seats,Leather Seats,Power Driver Seat,Driver Adjustable Lumbar,Power Passenger Seat,Passenger Adjustable Lumbar,Pass-Through Rear Seat,Rear Bench Seat,Heated Front Seat(s),Heated Front Seat(s),Cooled Front Seat(s),Heated Rear Seat(s),Mirror Memory,Seat Memory,Floor Mats,Floor Mats,Heated Steering Wheel,Adjustable Steering Wheel,Steering Wheel Audio Controls,Tire Pressure Monitor,Power Windows,Power Windows,Power Door Locks,Remote Engine Start,Keyless Entry,Power Door Locks,Keyless 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,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,Cross-Traffic Alert,Blind Spot Monitor,Lane Departure Warning,Front Collision Warning,Front Collision Mitigation,Driver Restriction Features,Tire Pressure Monitor,Telematics,Navigation from Telematics,Requires Subscription,Telematics,Navigation from Telematics,WiFi Hotspot,Requires Subscription