The 2026 GMC Sierra 3500HD Denali Ultimate 4WD Crew Cab Standard Box represents the pinnacle of heavy-duty luxury and professional-grade capability. Powered by the legendary Duramax 6.6L Turbo-Diesel V8, this premium pickup blends exceptional towing strength, advanced trailering technology, and first-class comfort. Finished in Downpour Metallic with an upscale Alpine Umber Full-Grain Leather Interior, its built to conquer the toughest jobs while surrounding you in uncompromising refinement.  

Performance & Capability 

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

Transmission: Allison 10-Speed Automatic Transmission for smooth, confident shifting under any load  

Drivetrain: Autotrac Two-Speed 4WD Transfer Case for maximum traction in changing terrain  

Off-Road Suspension Z71 engineered for enhanced capability on rough roads and job sites  

Automatic Locking Rear Differential for improved traction in low-grip conditions  

Hill Descent Control for greater confidence on steep grades  

3.42 Rear Axle Ratio optimized for towing and highway efficiency  

Integrated Exhaust Brake enhances downhill control while towing  

Heavy-Duty Engine Oil & Transmission Oil Coolers for long-lasting durability  

220-Amp Alternator supports demanding electrical accessories  

Engine Block Heater for dependable cold-weather starts  

Skid Plates help protect key underbody components  

Gooseneck/5th Wheel Prep Package for serious towing capability  

Integrated Trailer Brake Controller with advanced trailering technologies  

Trailer Camera Provisions, Hitch Guidance, Hitch View, and Trailering App simplify every towing experience  

Trailer Tire Pressure Monitoring System for added confidence while hauling  

Winter & Weather Comfort 

Heated & Ventilated Front Seats for year-round comfort  

Heated Rear Outboard Seats for second-row passenger comfort  

Heated Steering Wheel for cold-weather convenience  

Dual-Zone Automatic Climate Control with rear air vents  

Remote Vehicle Start to warm or cool the cabin before you arrive  

Rain-Sensing Windshield Wipers automatically adjust to changing conditions  

Winter Grille Cover helps maintain engine temperature in extreme cold  

Premium All-Weather Floor Liners with removable carpet inserts for year-round interior protection  

Interior Comfort & Convenience 

Premium Denali Ultimate Alpine Umber Full-Grain Leather Interior  

Power Driver & Front Passenger Seats with memory settings  

Driver & Front Passenger Massage Seats for long-distance comfort  

Power Adjustable Bolsters & 4-Way Lumbar Support for personalized seating  

Front Bucket Seats with premium craftsmanship and detailed stitching  

Power Sliding Rear Window for added ventilation and convenience  

Rear Seat Storage Package for secure cargo organization  

13.4-Inch GMC Premium Infotainment Touchscreen with Google Built-In  

12-Inch Reconfigurable Digital Driver Information Display  

Wireless Apple CarPlay & Android Auto  

Wireless Charging Pad  

Bose Premium Sound System delivering rich, immersive audio  

Head-Up Display projects key driving information directly into your line of sight  

Rear Camera Mirror for an expanded rearward view  

Multiple USB charging ports and 120-Volt Power Outlets in both the cabin and truck bed  

Universal Home Remote and Push-Button Start for everyday convenience  

Safety & Driver Assistance 

GMC Pro Safety suite with advanced driver-assistance technologies  

Forward Collision Alert with Automatic Emergency Braking and Front Pedestrian Braking  

Adaptive Cruise Control and Following Distance Indicator for added highway confidence  

Lane Departure Warning to help keep you safely on course  

HD Surround Vision, Front & Rear Park Assist, and Rear Cross Traffic Alert for easier maneuvering  

Trailer Side Blind Zone Alert for enhanced awareness while towing  

Driver Safety Alert Seat and IntelliBeam Automatic High Beams for increased driver confidence  

Teen Driver Technology, comprehensive airbags, and Tire Pressure Monitoring System for added peace of mind 

Exterior Styling & Utility 

Exterior Colour: Downpour Metallic a deep, sophisticated finish that complements the trucks bold Denali Ultimate styling  

20-Inch Machined Aluminum Wheels wrapped in aggressive All-Terrain Tires  

Signature LED Headlamps, LED Fog Lamps, Roof Marker Lamps, and LED Cargo Bed Lighting  

Power-Retractable Assist Steps with perimeter lighting  

Power Sunroof bringing natural light into the premium cabin  

Chrome Mirror Caps, Chrome Door Handles & Chrome Recovery Hooks for unmistakable Denali luxury  

Power Heated Auto-Dimming Trailering Mirrors with integrated task lighting  

GMC MultiPro Tailgate offering multiple loading and work configurations  

EZ Lift Power Lock & Release Tailgate for effortless cargo access  

Spray-On Bedliner protecting the bed from heavy-duty use  

Rear Bumper CornerSteps for easy bed access  

Deep-Tinted Glass adds privacy and refined styling  

 

Whether youre towing heavy equipment, hauling with confidence, or arriving in premium comfort, the 2026 GMC Sierra 3500HD Denali Ultimate 4WD Crew Cab Standard Box delivers uncompromising diesel power, industry-leading trailering technology, and handcrafted luxury. It is the ultimate heavy-duty truck for drivers who demand exceptional capability without sacrificing comfort, innovation, or style. 

 



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.

Engine: 8 Cylinder Engine 6.6L
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 ProvisionsTrailer 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 AccessoriesBuckle 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, leather-wrappedSteering 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 electricAir conditioning, dual-zone automatic climate controlSteering column, manual Tilt-Wheel and telescopingAdaptive Cruise ControlWireless 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, rearRear Camera Mirror inside rearview auto-dimming with full camera displaySeat adjuster, driver 16-way power including lumbar and massageSeat adjuster, passenger 16-way power including lumbar and massageMulticolour 15" Diagonal Head-Up DisplaySeat, 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 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.)Seat trim, Full Grain Leather seatsFloor mats, carpeted front (Includes Premium floor mats with corner applique.)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 lightSunroof, powerHeadlamps, Animated LED projectors, LED turn signals and Daytime Running LampsLPO, MultiPro Tailgate Audio System by Kicker (dealer-installed)Tires, LT275/65R20 all-terrain, blackwall (Requires single rear wheels.)Wheelhouse liners, rear (Not available with dual rear wheel models.)Lamps, Smoked Amber roof marker, (LED) (Standard with dual rear wheels.)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 detailsWheels, 20" (50.8 cm) Ultra-bright machined aluminum wheels with gloss black inserts with Black painted pockets (Requires single rear wheels.)Assist steps, power-retractable with LED perimeter lighting and bright accent (Not available with any other assist steps.)Winter Grille CoverCargo tie downs (12), fixed, rated at 500 lbs per cornerGrille, Signature Denali Ultimate grille in Vader chrome with High Gloss Black surroundBedliner, Spray-on Pickup bedliner with GMC logo (does not include spray-on liner on tailgate due to Black composite inner panel)Entertainment EquipmentBluetooth for phone connectivity to vehicle infotainment systemWireless phone projection for Apple CarPlay and Android AutoBose Premium Series with 12-speaker system with CenterPoint, Richbass woofer and AudioPilotAudio 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 EquipmentAir filtration monitoringTransfer case, two-speed active electronic Autotrac with push button controlFour wheel driveCooling, external engine oil coolerCooling, auxiliary external transmission oil coolerTrailer 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 indicatorEngine block heaterPush Button StartAir filter, heavy-dutyAuto-locking rear differentialRear axle, 3.42 ratioAlternator, 220 ampsPickup bedSkid Plates protect the oil pan, front axle and transfer caseTransmission, 10-speed automaticRecovery 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 fatigueEngine, 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)Battery, heavy-duty 730 cold-cranking amps/70 Amp-hr maintenance-free with rundown protection and retained accessory power (Included and only available with (L5P) Duramax 6.6L Turbo-Diesel V8 engine.)Exhaust BrakeCapped Fuel FillGVWR, 12,100 lbs. (5488 kg) with single rear wheels (Included and only available with TK30743 model and (L5P) Duramax 6.6L Turbo-Diesel V8 engine. Requires single rear wheels.)Other 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.)Technology Package includes (DRZ) Rear Camera Mirror and (UV6) Multicolour 15" Diagonal Head-Up Display