The 2026 GMC Sierra 3500HD SLT blends heavy-duty capability, premium comfort, and advanced trailering technology into one commanding pickup. Built to handle demanding workloads while delivering upscale refinement, this Crew Cab 4WD is equally at home on the jobsite, towing heavy equipment, or cruising long highway stretches in comfort.  

 

Performance & Capability  

Duramax 6.6L V8 Turbo-Diesel delivering immense torque and confident pulling power  

10-speed automatic transmission engineered for smooth shifting and heavy-duty performance  

Autotrac Two-Speed 4WD Transfer Case for dependable traction in changing road and weather conditions  

X31 Off-Road Package featuring Rancho shocks, skid plates, and hill descent control  

Automatic Locking Rear Differential for enhanced grip on rough terrain  

Heavy-Duty Cooling System, Engine Oil Cooler, and Transmission Oil Cooler for demanding towing conditions  

Integrated Trailer Brake Controller with Hitch Guidance and Hitch View for easier trailer alignment  

Gooseneck / 5th Wheel Prep Package ready for serious towing capability  

Trailering App with in-vehicle towing technology and trailer monitoring support  

Exhaust Brake and Digital Variable Steering Assist for added confidence under load  

3.42 Rear Axle Ratio balancing pulling strength with highway efficiency  

 

Winter & Weather Comfort  

Heated & Ventilated Front Seats for year-round comfort  

Heated Steering Wheel to keep cold-weather drives comfortable  

Remote Vehicle Start System for convenient cabin pre-conditioning  

Dual-Zone Automatic Climate Control for personalized comfort settings  

Engine Block Heater and Winter Grille Cover for reliable cold-weather operation  

Rain-Sensing Windshield Wipers for improved visibility in changing weather  

Deep-Tinted Glass helping reduce glare and interior heat  

 

Interior Comfort & Convenience  

Front Bucket Seats with Power Driver & Passenger Adjustments for premium comfort  

Rear Seat Storage Package adding practical interior versatility  

Wireless Charging Pad and multiple USB ports for seamless device connectivity  

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

Premium GMC Infotainment System with a massive 13.4 touchscreen and Google Built-In compatibility  

Wireless Apple CarPlay & Android Auto integration  

12 Digital Driver Information Centre with customizable vehicle data  

Bose Premium Audio System delivering rich, immersive sound  

Power Windows, Remote Start, and Universal Home Remote for everyday convenience  

Heated Trailer Tow Mirrors with Auto-Dimming functionality for enhanced towing visibility  

 

Safety & Driver Assistance  

Sierra HD Pro Safety Suite providing advanced driver confidence technologies  

Forward Collision Alert with Automatic Emergency Braking  

Lane Departure Warning helping maintain confident highway driving  

Front Pedestrian Braking for added urban awareness  

Following Distance Indicator and Adaptive Safety Features for improved driver awareness  

HD Rear Vision Camera for easier reversing and trailer positioning  

Teen Driver Mode and Buckle-to-Drive safety technologies  

Tire Pressure Monitoring System and Rear Seat Reminder for added peace of mind  

 

Exterior Styling & Utility  

Exterior Colour: Summit White clean, bold, and timeless with a professional-grade appearance  

20 Bright Face Aluminum Wheels with Dark Painted Accents for a rugged upscale look  

Chrome Front & Rear Bumpers with Chrome Mirror Caps and Door Handles  

Chrome Assist Steps for easier cabin access  

LED Headlamps, LED Fog Lamps, and LED Cargo Bed Lighting for enhanced visibility day or night  

Spray-On Bedliner protecting the truck bed from heavy-duty wear and tear  

EZ Lift Power Lock & Release Tailgate for added convenience  

Bed-Mounted 120V Power Outlet for worksite or recreational utility  

Black Front Recovery Hooks adding rugged off-road functionality  

Rear Bumper CornerSteps for easier bed access  

Standard Box configuration delivering the ideal balance of cargo space and maneuverability  

 

Whether youre hauling equipment, towing a large trailer, or heading out for a weekend adventure, the 2026 GMC Sierra 3500HD SLT delivers uncompromising diesel power, premium comfort, and advanced technology. Its a heavy-duty truck engineered to work hard while surrounding you with refinement, confidence, and unmistakable GMC presence. 

 



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 airbagTeen 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 hitchingTire 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'sForward 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 onlyHD Rear Vision Camera (Removed with (UV2) HD Surround Vision.)Rear 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 lightingBuckle 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 EquipmentSeat adjuster, driver 10-way power including lumbarSeat adjuster, passenger 10-way power including lumbarSeating, heated driver and front outboard passengerDriver memory, recalls driver "presets" for power driver seat and outside mirrorsFloor 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 systemTheft-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 controlCruise control, steering wheel-mountedSteering column, manual Tilt-Wheel and telescopingUSB Ports, 2, Charge/Data ports located on instrument panelSteering wheel, wrappedAir vents, rearDriver Information Centre, enhanced, 12.3" diagonal reconfigurable multicolour digital displayFloor mats, carpeted front (Deleted when LPO floor liners are ordered or (BKF) Premium Floor Liners are ordered.)Floor mats, carpeted rear (Deleted when LPO floor liners are ordered or (BKF) Premium Floor Liners are ordered.)Assist handles, front A-pillar mounted for driver and passenger, rear B-pillar mountedGMC Premium information Display- 13.4" diagonal Multicolour touch screenKeyless Open and Start includes remote keyless entryUSB ports, (2) charge-only, rearSeat, 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)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.)Seats, front 40/20/40 split-bench with covered armrest storage and under-seat storage (lockable) (Not available with (PCY) SLT Convenience Package or (PDB) SLT Premium Package.)Seat trim, Perforated Leather-appointed front outboard seating positionsExterior EquipmentSingle 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-tintedDoor handles, chromeTailgate and bed rail protection caps, topBumper, front chrome lowerBumper, rear chrome with bumper CornerStepsTailgate, standardLamps, 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 sideIntelliBeam, 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 lightTires, LT275/70R18E all-terrain, blackwall (Requires single rear wheels.)Headlamps, Animated LED projectors, LED turn signals and Daytime Running LampsWheelhouse liners, rear (Not available with dual rear wheel models.)Wheels, 18" (45.7 cm) machined aluminum wheel with Dark Grey metallic accents (Requires single rear wheels.)Cargo tie downs (12), fixed, rated at 500 lbs per cornerTire, spare LT275/70R18 all-terrain, blackwall (Included and only available with (QF6) LT275/70R18E all-terrain, blackwall tires or (QF9) LT275/65R20 all-terrain, blackwall tires with (E63) pickup bed models.)Grille, Chrome surround with Chrome insert barsEntertainment EquipmentBluetooth for phone connectivity to vehicle infotainment systemAudio system feature, 6-speaker system,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 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 stepRecovery hooks, front, frame-mounted, BlackSuspension Package (Not available with (X31) Off-Road Package.)Push Button StartAir filter, heavy-dutyAuto-locking rear differentialCapless Fuel Fill (Requires (L8T) 6.6L gas V8 engine.)GVWR, 11,550 lbs. (5239 kg) with single rear wheels (Included and only available with TK30743 model and (L8T) 6.6L V8 gas engine. Requires single 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 Guidance (Deleted when (ZW9) pickup bed delete is ordered.)Sierra 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 App