Turbocharged Diesel V8 6.6L engine for unmatched towing power | Luxurious leather interior with heated steering wheel | Advanced safety features including adaptive cruise control | Power Locks | Privacy Glass

Introducing the 2026 GMC Sierra 2500HD Denali Ultimate, a brand new heavy-duty truck that combines luxury with unparalleled capability. This 4-door powerhouse is perfect for those who demand both performance and refinement, whether tackling rugged terrains or cruising through the streets of Barrie. With its striking grey exterior, the Sierra 2500HD is designed to make a statement wherever it goes./n/nUnder the hood, the Sierra 2500HD boasts a robust 6.6L turbocharged diesel V8 engine paired with an automatic transmission. This dynamic duo delivers exceptional torque and power, ensuring you have the strength to tow and haul with confidence. The 4x4 drive system enhances traction and stability, making it ideal for Canadian winters and off-road adventures alike. Diesel efficiency means fewer stops at the pump, allowing you to focus on the journey ahead./n/nStep inside the Sierra 2500HD and experience a world of comfort and technology. The leather interior and bucket seats provide a luxurious feel, while the heated steering wheel and climate control keep you cozy in any weather. Advanced features like the navigation system and heads-up display ensure you stay connected and informed. With premium audio and satellite radio, every drive is an opportunity to enjoy your favorite tunes in crystal-clear quality./n/nSafety is paramount in the Sierra 2500HD, equipped with a suite of features designed to protect you and your passengers. Adaptive cruise control and lane departure warning enhance highway driving, while reverse park assist and parking sensors make maneuvering in tight spaces a breeze. The stability control and traction control systems provide added confidence on slippery roads, ensuring peace of mind in diverse Canadian conditions./n/nThe 2026 GMC Sierra 2500HD Denali Ultimate is a testament to GMC's commitment to excellence, offering a blend of luxury, power, and practicality. It's more than just a truck; it's a statement of capability and style, ready to tackle any challenge with ease./n/nSpecifications/n- Turbocharged Diesel V8 6.6L engine for unmatched towing power/n- 4x4 drive system for superior traction in all conditions/n- Luxurious leather interior with heated steering wheel/n- Advanced safety features including adaptive cruise control/n- Premium audio system with satellite radio for entertainment on the go

...

Engine: Turbocharged Diesel V8 6.6L/
Safety EquipmentAirbags, 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 driverStabiliTrak, stability control system with Proactive Roll Avoidance and traction control, includes electronic trailer sway control and hill start assistDaytime Running Lamps, LED signature lightingHitch Guidance dynamic single line to aid in truck trailer alignment for hitchingRear Seat Belt IndicatorTire Pressure Monitoring System, auto learn includes Tire Fill Alert (does not apply to spare tire)Safety Alert SeatTrailer Side Blind Zone AlertHitch 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.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 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 onlyBuckle 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.)Trailering Information Label provides max trailer ratings for tongue weight, conventional, gooseneck and 5th wheel traileringOnStar Services capable (See onstar.ca for details and limitations. Services vary by model. Service plan required.)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 AccessoriesOnStar 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. Term begins on vehicle delivery date. 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. Services, connectivity, and capabilities have additional terms and limitations and are subject to change, and will vary by model, vehicle configuration, software version, conditions, and geographical and technical restrictions. Compatible smartphone required for mobile app commands. Not all vehicles may transmit all crash data; OnStar links to emergency services; Voice and Maps apps are subject to change at any time and may be provided by third parties. Non-refundable and no cash value. See onstar.ca/en/info for terms and details.)Interior EquipmentSeating, heated driver and front outboard passengerSeats, ventilated driver and front passengerSeats, heated second row outboard seatsCentre 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 controlsCompass, located in instrument clusterWindow, 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 electricAssist handles front A-pillar mounted for driver and passenger, rear B-pillar mountedAir conditioning, dual-zone automatic climate controlExterior Temperature Display, located in radio displaySteering column, manual Tilt-Wheel and telescopingRear Seat ReminderAdaptive Cruise ControlWireless ChargingUSB Ports, 2 (first row) located on consoleAir vents, rearDriver Information Centre, enhanced, 12.3" diagonal reconfigurable multicolour digital displayWindows, power front, drivers express up/downDriver memory recalls driver "presets" for power driver seat and outside mirrorsWindow, power, rear sliding with rear defoggerUSB Ports, 2, Charge/Data ports located inside centre consoleSeats, front bucket with centre consoleSeat, 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 under-seat storage, (includes child seat top tether anchor)GMC 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 DisplayFloor mats, carpeted rear (Unique premium carpet. Deleted when LPO floor liners are ordered or (BKF) Premium Floor Liners are ordered.)Seat trim, Full Grain LeatherFloor mats, carpeted front (Includes Premium floor mats with corner applique.)Exterior EquipmentTires, LT275/65R20 all-terrain, blackwallTire carrier lock keyed cylinder lock that utilizes same key as ignition and doorCornerStep, rear bumperCargo tie downs (12), fixed, rated at 500 lbs (226.8 kg) per cornerLamps, cargo area cab mounted integrated with centre high mount stop lamp, with switch in bank on left side of steering wheelMirror caps, chromeGlass, deep-tintedDoor handles, chromeTailgate and bed rail protection caps, topWheelhouse liners, rearWipers, front rain-sensingFog lamps, LEDBed Step, Black integrated on forward portion of bed on driver and passenger sideTire, spare LT275/70R18 all-terrain, blackwallBumper, front, body-colour lowerBumper, rear body-colour with bumper CornerStepsHeadlamps, Animated LED projectors LED turn signals and Daytime Running LampsIntelliBeam, 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 lampsMirrors, outside power-adjustable vertical trailering with heated and auto-dimming upper glass, (driver and passenger), lower convex mirrors, turn signal indicators, puddle lamps, (U12) perimeter lighting, auxiliary lighting, power folding/extending (extends 3.31" [84.25mm]) lightingTailgate, 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 detailsTailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area lightSunroof, powerLamps, Smoked Amber roof marker, (LED)Winter Grille CoverMouldings, beltline, chromeWheels, 20" (50.8 cm) Ultra-bright machined aluminum wheels with gloss black inserts with Black painted pocketsAssist steps, power-retractable, with LED perimeter lighting and bright accent (Not available with any other assist steps.)Grille (Signature Denali Ultimate grille in Vadar chrome with High Gloss Black surround.)Bedliner, 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 systemWi-Fi Hotspot capable (Terms and limitations apply. See onstar.ca or dealer for details.)Wireless 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 phonesBose Premium Series with 12-speaker system with Centerpoint Richbass woofer and AudioPilotLPO, MultiPro Tailgate Audio System by KickerSiriusXM 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 monitoringFour 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 sectionSteering, Digital Variable Steering Assist this system automatically adjusts steering based on speed, road conditions, and other inputs to reduce driver effort and fatigueBrakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotorsBrake lining wear indicatorEngine block heaterPickup bed includes bed assist stepPush Button StartAir filter, heavy-dutyAuto-locking rear differentialHill Descent ControlAlternator, 220 ampsTransfer case, two-speed active, electronic Autotrac with push button controlIn-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.)Skid Plates protect the oil pan, front axle and transfer caseSuspension, Off-Road includes twin-tube shocksTransmission, 10-speed automaticEngine, 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)Capped Fuel FillRecovery hooks, front, Chrome (plant installed.)Rear axle, 3.42 ratio (Included and only available with (L5P) Duramax 6.6L Turbo-Diesel V8 engine.)GVWR, 11,350 lbs. (5148 kg) (Requires TK20743 Crew Cab model, (L5P) Duramax 6.6L Turbo-Diesel V8 engine, with 20" or 22" wheels and tires. Not available with (NHT) Max Trailering Package.)Battery, heavy-duty dual 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 brakeOther EquipmentTrailering Package includes trailer hitch, 7-pin and 4-pin connectors and (CTT) Hitch GuidanceX31 Off-Road Package includes (JHD) Hill Descent Control, (NZZ) skid plates, Off-Road suspension and Twin-tube Rancho shocksSierra 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 AppTechnology Package includes (DRZ) Rear Camera Mirror and (UV6) Multicolour 15" Diagonal Head-Up DisplayLPO FRONT AND REAR MOULDED SPLASH GUARDS BLACK (dealer-installed),GVWR 11 750 LBS. (5330 KG),TRANSMISSION 10-SPEED AUTOMATIC (STD),LPO GMC PROTECTION PACKAGE includes (RIA) all-weather floor liner LPO and (VQK) front and rear Black moulded splash guards LPO (dealer-installed),HIGH IDLE SWITCH,DENALI ULTIMATE PREFERRED EQUIPMENT GROUP includes standard equipment,LPO GMC MULTIPRO TAILGATE STEP LIGHTS (dealer-installed),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) (STD),REAR AXLE 3.42 RATIO,3 YEARS SIRIUS XM,LICENSE PLATE KIT FRONT INCANDESCENT LIGHTING (will be shipped to orders with ship-to provinces that require front license plate),UNIVERSAL VEHICLE MODULE Includes module customer interface harness and instructions. Provides vehicle data over an open CAN network (J1939). 10 switchable inputs/outputs and Custom Configuration Tool to integrate upfit equipment controls. Software features that support Auto Vehicle Start Shutdown Inhibit Fast Idle and Snow Plow,MAX TRAILERING PACKAGE includes 3500 HD Frame 3500 HD Leaf Springs 12 Rear axle 3500 HD Shock Package (CGN) spray-on bed liner and (Z6A) Gooseneck / 5th Wheel Prep provisions with bed stamped holes and caps,LPO ALL-WEATHER FLOOR LINER 1ST AND 2ND ROWS (dealer-installed),Bluetooth Connection,Driver Adjustable Lumbar,Power Windows,Auxiliary Audio Input,Mirror Memory,Universal Garage Door Opener,Traction Control,Pass-Through Rear Seat,Rear Bench Seat,Power Windows,Rain Sensing Wipers,Steering Wheel Audio Controls,Bucket Seats,Seat-Massage,Tow Hitch,Aerial View Display System,Cruise Control,MP3 Capability,Running Boards/Side Steps,Driver Air Bag,Back-Up Camera,Driver Restriction Features,Heated Rear Seat(s),Passenger Air Bag,Cross-Traffic Alert,Heated Mirrors,AM/FM Stereo,Front Collision Mitigation,Requires Subscription,Keyless Entry,Sliding Rear Window,Remote Engine Start,Tires - Front All-Terrain,Intermittent Wipers,Conventional Spare Tire,Heads-Up Display,Premium Sound System,Cooled Front Seat(s),Privacy Glass,Front Collision Warning,Running Boards/Side Steps,Aluminum Wheels,Heated Front Seat(s),Auxiliary Audio Input,Lane Departure Warning,Daytime Running Lights,Bluetooth Connection,Lane Departure Warning,Front Side Air Bag,Bluetooth Connection,Telematics,Rear Head Air Bag,Fog Lamps,Power Windows,Rear Defrost,Turbocharged,Rear Parking Aid,Power Door Locks,Auto-Dimming Rearview Mirror,Power Folding Mirrors,MP3 Capability,Back-Up Camera,Leather Steering Wheel,Heated Steering Wheel,Power Mirror(s),Power Driver Seat,ABS,Front Collision Mitigation,Tire Pressure Monitor,Rear Defrost,Locking/Limited Slip Differential,Adaptive Cruise Control,Climate Control,Daytime Running Lights,Power Door Locks,Multi-Zone A/C,Floor Mats,Bed Liner,Heated Front Seat(s),Keyless Start,Integrated Turn Signal Mirrors,Power Retractable Running Boards,Front Head Air Bag,Front Collision Warning,Requires Subscription,Tow Hooks,Passenger Adjustable Lumbar,Daytime Running Lights,Tires - Rear All-Terrain,Seat Memory,Passenger Air Bag Sensor,MP3 Capability,Keyless Start,Requires Subscription,Generic Sun/Moonroof,Blind Spot Monitor,4-Wheel Disc Brakes,Power Steering,Floor Mats,Navigation System,Heads-Up Display,Power Passenger Seat,Front Collision Mitigation,Stability Control,Variable Speed Intermittent Wipers,Telematics,Auxiliary Audio Input,Security System,Automatic Highbeams,Back-Up Camera,Back-Up Camera,Requires Subscription,Four Wheel Drive,Automatic Highbeams,Premium Sound System,Leather Seats,Integrated Tailgate Step,Sun/Moonroof,Smart Device Integration,Adjustable Steering Wheel,WiFi Hotspot,Satellite Radio,Seat-Massage,Smart Device Integration,Front Collision Warning,A/C