The 2026 GMC Sierra 3500HD Denali combines heavy-duty capability, premium luxury, and advanced towing technology into one commanding pickup. Built to tackle demanding workloads while surrounding occupants with upscale comfort, this Denali delivers uncompromising strength, confidence, and refinement for work, travel, and everything in between. 

Performance & Capability 

Engine: Duramax 6.6L V8 Turbo-Diesel delivering exceptional torque and impressive heavy-duty performance 

Transmission: Allison-inspired 10-speed automatic transmission engineered for smooth power delivery and towing confidence 

Drivetrain: Four-Wheel Drive 4WD for superior traction in changing road and weather conditions 

Rear Axle Ratio: 3.42 axle ratio optimized for hauling and towing capability 

Suspension: Heavy-duty suspension package designed for stability under load 

Automatic Locking Rear Differential for enhanced traction on challenging terrain 

Engine Exhaust Brake helps maintain control and confidence when descending steep grades 

Digital Variable Steering Assist improves steering precision and handling 

Trailering Package with integrated trailer brake controller, hitch guidance, Hitch View, and Trailering App 

Gooseneck/5th Wheel Prep Package for serious towing capability 

Trailer Camera Provisions and Bed View Camera for improved visibility when hauling 

Winter & Weather Comfort 

Heated & Ventilated Front Seats for year-round comfort 

Heated Rear Outboard Seats for second-row passenger convenience 

Heated Steering Wheel for added cold-weather comfort 

Dual-Zone Automatic Climate Control allows personalized cabin temperatures 

Remote Vehicle Start System to warm up or cool down the cabin before departure 

Engine Block Heater for dependable cold-weather starting 

Rain-Sensing Windshield Wipers automatically adjust to changing conditions 

Rear Window Defogger for improved visibility during winter driving 

Interior Comfort & Convenience 

Premium Denali Interior with Atmosphere/Brownstone leather-appointed seating 

Front Bucket Seats with power driver and passenger adjustments 

Driver Memory Settings for seat and mirror preferences 

Power Sliding Rear Window for added ventilation and convenience 

Wireless Charging Pad keeps compatible devices powered without cords 

Keyless Open and Push-Button Start for effortless entry and ignition 

Centre Floor Console with generous storage solutions 

Rear Seat Storage Package for enhanced cargo flexibility 

Universal Home Remote for garage door and gate operation 

Multiple USB Ports and 120-Volt Power Outlets throughout the cabin 

Heated, Power-Adjustable Trailering Mirrors with Auto-Dimming functionality 

Technology & Connectivity 

13.4 GMC Premium Infotainment Touchscreen with Google Built-In 

Wireless Apple CarPlay and Android Auto compatibility 

12 Reconfigurable Digital Driver Information Centre 

Bose Premium Audio System delivering rich, immersive sound 

Head-Up Display projects key driving information directly onto the windshield 

Rear Camera Mirror provides an enhanced rearward view 

Wireless Phone Projection for seamless smartphone integration 

Wi-Fi Hotspot Capability to help keep passengers connected on the road 

SiriusXM Capability and advanced connected services support 

Safety & Driver Assistance 

GMC Sierra HD Pro Safety Suite for added peace of mind 

Forward Collision Alert with Automatic Emergency Braking 

Front Pedestrian Braking for enhanced urban awareness 

Lane Departure Warning to help maintain lane positioning 

Following Distance Indicator for safer highway travel 

Adaptive Cruise Control for reduced driver fatigue on long trips 

HD Surround Vision providing a comprehensive view around the vehicle 

Front and Rear Park Assist for easier maneuvering 

Rear Cross Traffic Alert when backing out of parking spaces 

Trailer Side Blind Zone Alert for greater confidence while towing 

Driver Safety Alert Seat provides directional warning feedback 

Teen Driver Technology and Buckle-to-Drive safety features 

Exterior Styling & Utility 

Exterior Colour: Summit White clean, bold, and timeless 

Signature Denali Chrome Grille and Premium Exterior Accents 

Chrome Assist Steps for easy cab access 

Chrome Mirror Caps and Chrome Door Handles elevate the upscale appearance 

LED Headlamps, LED Fog Lamps, and LED Roof Marker Lamps for exceptional visibility 

GMC MultiPro Tailgate offering versatile loading and cargo management options 

EZ Lift Power Lock & Release Tailgate for effortless operation 

Spray-On Bedliner protects the cargo box from wear and tear 

LED Cargo Bed Lighting improves visibility when loading at night 

120-Volt Bed-Mounted Power Outlet adds worksite convenience 

Polished Forged Aluminum Wheels paired with All-Terrain Tires for a commanding presence 

Chrome Recovery Hooks and Heavy-Duty Trailering Equipment complete its professional-grade capability 

Whether youre towing a large RV, hauling equipment to the jobsite, or embarking on a cross-country adventure, the 2026 GMC Sierra 3500HD Denali delivers premium luxury, advanced technology, and relentless heavy-duty capability. Its the ultimate combination of power, refinement, and confidence, built for those who demand the very best from their truck. 



AMVIC Licensed Dealer

*Every reasonable effort is made to ensure the accuracy of the information shown. The Standard Equipment listed is provided at the time of the manufacture and may not match the exact vehicle displayed. Please confirm with a sales representative the accuracy of this information.

Safety EquipmentStabiliTrak, stability control system with Proactive Roll Avoidance and traction control includes electronic trailer sway control and hill start assistAirbags, Dual-stage frontal airbags for driver and front outboard passenger; Seat-mounted side-impact airbags for driver and front outboard passenger; Head-curtain airbags for front and rear outboard seating positions; Includes front outboard Passenger Sensing System for frontal outboard passenger airbagFront and Rear Park Assist, ultrasonicRear Cross Traffic AlertTeen Driver a configurable feature that lets you activate customizable vehicle settings associated with a key fob, to help encourage safe driving behaviour. It can limit certain available vehicle features, and it prevents certain safety systems from being turned off. An in-vehicle report card gives you information on driving habits and helps you to continue to coach your new driverRear Seat ReminderHitch Guidance dynamic single line to aid in truck trailer alignment for hitchingSafety Alert SeatTrailer Side Blind Zone AlertTire Pressure Monitoring System auto learn, includes Tire Fill Alert (does not apply to spare tire)Hitch Guidance with Hitch View with image adjustment, Pan/Zoom/TiltFront Pedestrian Braking (Included and only available with (PDI) Sierra HD Pro Safety.)Automatic Emergency Braking (Included and only available with (PDI) Sierra HD Pro Safety.)LED Signature DRL'sHD Surround Vision provides the driver with an overhead view of the scene around the vehicle on a centre stack display. Includes front camera washer.Trailer Camera Provisions and trailer viewing softwareForward Collision Alert (Included and only available with (PDI) Sierra HD Pro Safety.)Following Distance Indicator (Included and only available with (PDI) Sierra HD Pro Safety.)Lane Departure Warning (Included and only available with (PDI) Sierra HD Pro Safety.)Seat Belt Adjustable Guide Loops, front row onlyRear Seat Belt Indicator (Requires Crew Cab or Double Cab model.)OnStar Services capable (See onstar.ca for details and limitations. Services vary by model. Service plan required.)Daytime Running Lamps LED signature lightingHill Descent Control (Not available with dual rear wheels.)Bed View Camera camera in the CHMSL to show a view of the cargo bed, display located in infotainment screen, includes Two Trailer Camera ProvisionsBuckle to Drive prevents vehicle from being shifted out of Park until driver seat belt is fastened; times out after 20 seconds and encourages seat belt use (Included and only available with (PDI) Sierra HD Pro Safety)OnStar Basics (OnStar Fleet Basics for Fleet) Drive more confidently with up to 8 years of core OnStar services including mobile app commands, connectivity for select apps that provide in-vehicle voice assistance and navigation with real-time traffic, and Automatic Crash Response. (Requires (UE1) OnStar. OnStar Basics includes access to remote commands through your vehicle's mobile app (compatible smartphone required); Automatic Crash Response (not all vehicles may transmit all crash data; OnStar links to emergency services); and wireless connectivity for select apps that provide in-vehicle voice assistance and navigation with real-time traffic (Voice & Maps apps are subject to change at any time and may be provided by third parties). Term begins from date of vehicle delivery. Paid subscription required after expiry. Services are dependent on compatible wireless networks provided by third-party wireless service providers, working vehicle electrical systems, GPS signal and other factors outside GM control. Changes in technology and wireless networks may limit or prevent the operation of certain services. For customers who also separately receive or purchase a Premium Plan or Vehicle Data Plan to use Wi-Fi Hotspot and In-Vehicle Apps, the data provided as part of that plan will also be used by any Voice & Maps apps which already had data connectivity under this Basics plan; if any applicable data caps are reached, Voice & Maps apps will continue to function for the duration of this Basics plan but additional vehicle data plan(s) must be purchased to use Wi-Fi Hotspot and In-Vehicle Apps. Services, connectivity, and capabilities have additional terms and limitations and are subject to change, and will vary by model, vehicle configuration, conditions, and geographical and technical restrictions. Non-refundable and no cash value. See onstar.ca for details.)Interior EquipmentSeating, heated driver and front outboard passengerSeats, ventilated driver and front passengerSeats, heated second row outboard seatsDriver memory, recalls driver "presets" for power driver seat and outside mirrorsCentre Console, floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capabilityFloor covering, colour-keyed carpetingSteering wheel, heatedSteering wheel audio controlsExterior Temperature Display located in radio displayCompass, located in instrument clusterWindow, power front, drivers express up/downWindow, power front, passenger express up/downWindows, power rear, express downDoor locks, powerRemote vehicle starter systemUniversal Home RemoteTheft-deterrent system, unauthorized entryPower outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)Defogger, rear-window electricMirror, inside rearview auto-dimmingAir conditioning, dual-zone automatic climate controlSteering column, manual Tilt-Wheel and telescopingAdaptive Cruise ControlSteering wheel, wrappedWireless ChargingUSB Ports, 2 (first row) located on consoleAir vents, rearDriver Information Centre, enhanced, 12.3" diagonal reconfigurable multicolour digital displayAssist handles, front A-pillar mounted for driver and passenger, rear B-pillar mountedSeats, front bucket with centre consoleGMC Premium information Display- 13.4" diagonal Multicolour touch screenKeyless Open and Start includes remote keyless entryUSB ports, (2) charge-only, rearSeat trim, Forge Perforated Leather seating surfacesSeat adjuster, driver 12-way power including lumbarSeat adjuster, passenger 12-way power including lumbarSeat, Up-level Rear with Storage Package, 60/40 folding bench for Crew Cab models includes full-length bench seat, seatback storage on left and right side, centre fold out armrest with 2 cupholders, full cab width underseat storage, (includes child seat top tether anchor)Floor mats, carpeted front (Unique premium carpet. Deleted when LPO floor liners are ordered or (BKF) Premium Floor Liners are ordered.)Floor mats, carpeted rear (Unique premium carpet. Deleted when LPO floor liners are ordered or (BKF) Premium Floor Liners are ordered.)In-Vehicle Trailering App System, includes checklist, trailer maintenance reminders, trailer security alerts, trailer mileage, tow/haul reminder, trailer electrical diagnostics and Trailer Tire Pressure Monitor System module (Includes trailer tire pressure monitoring alert when (PTT) trailer tire pressure monitor sensors are installed.)USB ports, 2, Charge/Data ports located inside centre consoleExterior EquipmentTire, spare LT275/70R18 all-terrain, blackwall (Included and only available with (QF9) LT275/65R20 all-terrain, blackwall tires on single rear wheel models.)Single Rear WheelsTire carrier lock keyed cylinder lock that utilizes same key as ignition and doorCornerStep, rear bumperMouldings, beltline, stainless steelMirrors, outside power-adjustable vertical trailering with heated and auto-dimming upper glass, (driver and passenger) lower convex mirrors, turn signal indicators, puddle lamps, perimeter lighting, auxiliary lighting, power folding/extending (extends 3.31" [84.25mm])Mirror caps, chromeGlass, deep-tintedWindow, power, rear sliding with rear defoggerDoor handles, chromeTailgate and bed rail protection caps, topLamps, cargo area, cab mounted integrated with centre high mount stop lamp, with switch in bank on left side of steering wheelWipers, front rain-sensingFog lamps, LEDBed Step, Black integrated on forward portion of bed on driver and passenger sideBumper, front, body-colour lowerBumper, rear body-colour with bumper CornerStepsIntelliBeam, automatic high beam on/off (Included and only available with (PDI) Sierra HD Pro Safety.)LED Cargo Area Lighting located in cargo bed activated with switch on centre switch bank or key fobTaillamps, Animated LED Signature Tail, Stop, turn and Reverse lampsTailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area lightHeadlamps, Animated LED projectors, LED turn signals and Daytime Running LampsWheels, 20" (50.8 cm) Ultra-bright machined wheels with bright chrome inserts with Black painted pockets (Requires single rear wheels.)Tires, LT275/65R20 all-terrain, blackwall (Requires single rear wheels.)Assist steps, chromed tubular, 6" rectangular cab length (factory installed) (Not available with (BRS) power-retractable assist steps with LED perimeter lighting.)Wheelhouse liners, rear (Not available with dual rear wheel models.)Lamps, Smoked Amber roof marker, (LED) (Standard with dual rear wheels.)LPO, Polished exhaust tip (dealer-installed) (Requires (L8T) 6.6L V8 gas engine. Not included with (L5P) Duramax 6.6L Turbo Diesel V8 engine.)Tailgate, GMC MultiPro Tailgate with six functional load/access features. NOTE: Auto release can be disabled if ball hitch is installed. See Owner's manual for detailsCargo tie downs (12), fixed, rated at 500 lbs per cornerGrille, Signature Chrome Denali grilleBedliner, Spray-on Pickup bedliner with GMC logo (does not include spray-on liner on tailgate due to Black composite inner panel)Entertainment EquipmentBose Sound System, premium 7-speaker system with Richbass wooferBluetooth for phone connectivity to vehicle infotainment systemWireless phone projection for Apple CarPlay and Android AutoAudio System, 13.4" diagonal Premium GMC Infotainment System with Google built in apps such as navigation and voice assistance, includes colour 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.Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)SiriusXM Trial SubscriptionSiriusXM with 360L Trial Subscription. SiriusXM with 360L transforms your customers' ride with our most extensive and personalized radio experience on the road. (IMPORTANT: The SiriusXM trial subscription is not provided on vehicles that are ordered for Fleet Daily Rental ("FDR") use. Certain features and/or content may not be available unless an active data connection is enabled in the vehicle. Content varies by SiriusXM subscription plan. Features and display may vary by vehicle. All SiriusXM services require a subscription, sold separately by SiriusXM after the trial period. Your SiriusXM service will automatically stop at the end of your trial unless you decide to subscribe. If you decide to continue service after your trial, the subscription plan you choose will continue for an indeterminate term and you will be charged according to your chosen payment method at the then-current rates unless and until you cancel. Taxes apply. Please see the SiriusXM Customer Agreement at siriusxm.ca/terms for complete terms and how to cancel, which includes calling SiriusXM at 1-888-539-7474. All rates, content, and programming are subject to change. SiriusXM uses personal information in accordance with SiriusXM Privacy Policy, available at siriusxm.ca/privacy. SiriusXM Canada Inc. "SiriusXM", the SiriusXM logo, channel names and logos are trademarks of Sirius XM Radio Inc. and are used under license.)Mechanical EquipmentEngine, 6.6L V8 with Direct Injection and Variable Valve Timing, gasoline (401 hp [299 kW] @ 5200 rpm, 464 lb-ft of torque [629 N-m] @ 4000 rpm)Air filtration monitoringTransfer case, two-speed active electronic Autotrac with push button controlFour wheel driveCooling, external engine oil coolerCooling, auxiliary external transmission oil coolerBattery, heavy-duty 720 cold-cranking amps/80 Amp-hr maintenance-free with rundown protection and retained accessory power (Included and only available with (L8T) 6.6L V8 gas engine.)Alternator, 170 amps (Requires (L8T) 6.6L V8 gas engine.)Trailer brake controller, integratedFrame, fully-boxed, hydroformed front section and a fully-boxed stamped rear sectionBrakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotorsBrake lining wear indicatorRear axle, 3.73 ratio (Requires (L8T) 6.6L V8 gas engine.)Pickup bed includes bed assist stepPush Button StartAir filter, heavy-dutyAuto-locking rear differentialSkid Plates protect the oil pan, front axle and transfer caseCapless Fuel Fill (Requires (L8T) 6.6L gas V8 engine.)GVWR, 11,700 lbs. (5307 kg) with single rear wheels (Included and only available with model TK30943 model and (L8T) 6.6L V8 gas engine. Requires single rear wheels.)Recovery hooks, front, Chrome (Plant installed.)Suspension, Off-Road includes twin-tube shocks (Not available with dual rear wheels.)Steering, Digital Variable Steering Assist This system automatically adjusts steering based on speed, road conditions, and other inputs to reduce driver effort and fatigueTransmission, 10-Speed automaticOther EquipmentTrailering Package includes trailer hitch, 7-pin and 4-pin connectors and (CTT) Hitch GuidanceSierra HD Pro Safety includes (UEU) Forward Collision Alert, (UE4) Following Distance Indicator, (UKJ) Front Pedestrian Braking, (TQ5) IntelliBeam, (UFL) Lane Departure Warning, (T8Z) Buckle to Drive and (UHY) Automatic Emergency BrakingProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (UET) In-vehicle Trailering AppX31 Off-Road Package includes (JHD) Hill Descent Control, (NZZ) skid plates, Off-Road suspension and Twin-tube Rancho shocks (Not available with dual rear wheels.)