2026 GMC Sierra 3500HD

The 2026 GMC Sierra 3500HD SLT combines heavy-duty capability, advanced towing technology, and premium comfort into one exceptionally capable truck. Designed to tackle demanding jobs while keeping passengers comfortable and connected, this Sierra HD delivers impressive strength, confidence, and refinement wherever the roador worksitetakes you. 
Performance & Capability 
Engine: Duramax 6.6L V8 Turbo-Diesel delivering outstanding torque, towing confidence, and long-haul durability 

Transmission: Allison 10-Speed Automatic Transmission engineered for smooth, efficient power delivery 

Drivetrain: 4-Wheel Drive 4WD system for enhanced traction and control in all weather and terrain conditions 

Rear Axle Ratio: 3.42 axle ratio optimized for towing performance and highway efficiency 

Automatic Locking Rear Differential for improved traction when conditions become challenging 

Digital Variable Steering Assist enhances handling precision and driver confidence 

Heavy-Duty Cooling Systems including engine oil cooler, transmission oil cooler, and engine exhaust brake 

Integrated Trailer Brake Controller and Advanced Trailering Package for confident towing capability 

Gooseneck/5th Wheel Prep Package ready for serious hauling requirements 

Hitch Guidance, Hitch View, Trailer Camera Provisions, and In-Vehicle Trailering App simplify hookup and towing operations 

Standard Heavy-Duty Suspension Package built to handle demanding workloads with stability and control 

Winter & Weather Comfort 
Heated & Ventilated Front Seats provide year-round comfort regardless of the season 

Heated Rear Outboard Seats keep second-row passengers comfortable during colder months 

Heated Steering Wheel adds warmth on frosty mornings 

Remote Start System allows the cabin to be pre-conditioned before departure 

Dual-Zone Automatic Climate Control maintains personalized comfort for driver and passenger 

Engine Block Heater supports dependable cold-weather starts 

Rain-Sensing Windshield Wipers automatically adjust to changing weather conditions 

Winter Grille Cover helps maintain optimal operating temperatures during extreme cold 

Interior Comfort & Convenience 
Premium Front Bucket Seats with power adjustment and lumbar support for exceptional long-distance comfort 

Driver Memory Settings conveniently recall preferred seating and mirror positions 

Power Sliding Rear Window enhances cabin ventilation and convenience 

Wireless Charging Pad keeps devices powered without clutter 

Multiple USB Ports throughout the cabin for convenient device connectivity 

120-Volt Interior Power Outlet and Bed-Mounted Power Outlet provide versatile charging capability 

Keyless Open and Push-Button Start simplify everyday operation 

Power Sunroof brings additional light and openness to the cabin 

Rear Seat Storage Package adds practical cargo flexibility 

Bose Premium Audio System delivers rich, immersive sound quality 

13.4 GMC Premium Infotainment Touchscreen with Google Built-In, Navigation Capability, Wireless Apple CarPlay, and Wireless Android Auto 

12 Digital Driver Information Centre provides customizable vehicle and towing information 

Safety & Driver Assistance 
GMC Pro Safety and Pro Safety Plus technologies enhance driver awareness and confidence 

Forward Collision Alert with Automatic Emergency Braking 

Front Pedestrian Braking for added urban driving protection 

Lane Departure Warning helps keep the vehicle centered and alert 

Adaptive Cruise Control enhances highway comfort and convenience 

HD Surround Vision provides a comprehensive view around the truck 

Bed View Camera improves visibility when loading cargo or connecting trailers 

Trailer Side Blind Zone Alert assists while towing 

Rear Cross Traffic Alert helps detect approaching vehicles when reversing 

Front and Rear Park Assist simplify maneuvering in tight spaces 

Following Distance Indicator and Safety Alert Seat provide additional driver awareness 

Teen Driver technology encourages safe driving habits 

Exterior Styling & Utility 
Exterior Colour: Summit White clean, timeless, and professional in appearance 

20 Bright-Face Aluminum Wheels with Dark Painted Pockets create a bold and upscale stance 

Chrome Front and Rear Bumpers, Chrome Mirror Caps, Chrome Door Handles, and Chrome Assist Steps elevate the trucks premium appearance 

LED Headlamps, LED Fog Lamps, LED Cargo Bed Lighting, and LED Roof Marker Lamps maximize visibility day and night 

Heated Power Trailering Mirrors with Auto-Dimming functionality improve towing visibility 

Spray-On Bedliner helps protect the cargo box from wear and tear 

EZ Lift Power Lock and Release Tailgate adds everyday convenience 

CornerStep Rear Bumper allows easy access to the bed 

All-Terrain Tires provide confident traction on a variety of surfaces 

Front Recovery Hooks add utility when conditions demand extra capability 

Whether youre towing heavy equipment, hauling a large trailer, or tackling demanding projects year-round, the 2026 GMC Sierra 3500HD SLT delivers the strength, technology, and premium comfort needed to get the job done. Built to handle hard work without compromising refinement, its a heavy-duty truck engineered for drivers who expect capability and sophistication in equal measure. 
 

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 Equipment
StabiliTrak, stability control system with Proactive Roll Avoidance and traction control includes electronic trailer sway control and hill start assist
Airbags, 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 airbag
Teen 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 driver
Rear Seat Reminder
Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching
Tire 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/Tilt
Front 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's
Forward 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 only
HD 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 lighting
Buckle 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 Equipment
Seat adjuster, driver 10-way power including lumbar
Seat adjuster, passenger 10-way power including lumbar
Seating, heated driver and front outboard passenger
Driver memory, recalls driver "presets" for power driver seat and outside mirrors
Floor covering, colour-keyed carpeting
Steering wheel, heated
Steering wheel audio controls
Exterior Temperature Display located in radio display
Compass, located in instrument cluster
Window, power front, drivers express up/down
Window, power front, passenger express up/down
Windows, power rear, express down
Door locks, power
Remote vehicle starter system
Theft-deterrent system, unauthorized entry
Power 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 electric
Mirror, inside rearview auto-dimming
Air conditioning, dual-zone automatic climate control
Cruise control, steering wheel-mounted
Steering column, manual Tilt-Wheel and telescoping
USB Ports, 2, Charge/Data ports located on instrument panel
Steering wheel, wrapped
Air vents, rear
Driver Information Centre, enhanced, 12.3" diagonal reconfigurable multicolour digital display
Floor 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 mounted
GMC Premium information Display- 13.4" diagonal Multicolour touch screen
Keyless Open and Start includes remote keyless entry
USB ports, (2) charge-only, rear
Seat, 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 positions
Exterior Equipment
Single Rear Wheels
Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
CornerStep, rear bumper
Mouldings, beltline, stainless steel
Mirrors, 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, chrome
Glass, deep-tinted
Door handles, chrome
Tailgate and bed rail protection caps, top
Bumper, front chrome lower
Bumper, rear chrome with bumper CornerSteps
Tailgate, standard
Lamps, cargo area, cab mounted integrated with centre high mount stop lamp, with switch in bank on left side of steering wheel
Wipers, front rain-sensing
Fog lamps, LED
Bed Step, Black integrated on forward portion of bed on driver and passenger side
IntelliBeam, 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 fob
Taillamps, Animated LED Signature Tail, Stop, turn and Reverse lamps
Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light
Tires, LT275/70R18E all-terrain, blackwall (Requires single rear wheels.)
Headlamps, Animated LED projectors, LED turn signals and Daytime Running Lamps
Wheelhouse 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 corner
Tire, 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 bars
Entertainment Equipment
Bluetooth for phone connectivity to vehicle infotainment system
Audio system feature, 6-speaker system,
Wireless phone projection for Apple CarPlay and Android Auto
Audio 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 Subscription
SiriusXM 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 Equipment
Engine, 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 monitoring
Transfer case, two-speed active electronic Autotrac with push button control
Four wheel drive
Cooling, external engine oil cooler
Cooling, auxiliary external transmission oil cooler
Battery, 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, integrated
Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
Brake lining wear indicator
Rear axle, 3.73 ratio (Requires (L8T) 6.6L V8 gas engine.)
Pickup bed includes bed assist step
Recovery hooks, front, frame-mounted, Black
Suspension Package (Not available with (X31) Off-Road Package.)
Push Button Start
Air filter, heavy-duty
Auto-locking rear differential
Capless 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 fatigue
Transmission, 10-Speed automatic
Other Equipment
Trailering 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 Braking
ProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (UET) In-vehicle Trailering App