2026 GMC Sierra 3500HD

The 2026 GMC Sierra 3500HD SLT combines heavy-duty capability, premium comfort, and advanced towing technology into one commanding package. Built to tackle demanding workloads while delivering everyday refinement, this Crew Cab 4WD is engineered for drivers who need serious strength without sacrificing comfort or innovation. 
Performance & Capability 
Engine: Duramax 6.6L V8 Turbo-Diesel delivering exceptional torque, towing confidence, and long-haul durability 

Transmission: Allison 10-Speed Automatic Transmission engineered for smooth power delivery and optimized performance 

Drivetrain: Autotrac 4WD system for confident traction in changing road and weather conditions 

Rear Axle Ratio: 3.42 ratio designed for balanced towing capability and highway efficiency 

Trailering Equipment: Integrated trailer brake controller, hitch guidance, Hitch View, and advanced trailering technologies 

Gooseneck/5th Wheel Prep Package for enhanced towing versatility and heavy-duty hauling capability 

Exhaust Brake and Heavy-Duty Cooling Systems for greater control while towing and descending grades 

Automatic Locking Rear Differential for added traction on challenging terrain 

Digital Variable Steering Assist for confident handling and improved maneuverability 

FlexRide Drive Mode System allows performance adjustments based on road and towing conditions 

Winter & Weather Comfort 
Heated & Ventilated Front Seats for year-round comfort 

Heated Rear Outboard Seats for second-row passenger convenience 

Heated Steering Wheel for cold-weather driving comfort 

Remote Start System to warm or cool the cabin before departure 

Dual-Zone Automatic Climate Control for personalized comfort settings 

Engine Block Heater for dependable cold-weather starts 

Rain-Sensing Windshield Wipers automatically adjust to changing weather conditions 

Winter Grille Cover enhances cold-weather efficiency 

Interior Comfort & Convenience 
Premium Front Bucket Seats with power adjustments and lumbar support 

Driver Memory Settings for seat and mirror preferences 

Power Sliding Rear Window for added ventilation and convenience 

Rear Seat Storage Package helps keep gear organized and secure 

Wireless Charging Pad keeps compatible devices powered without cables 

Multiple USB Charging Ports throughout the cabin 

120V Instrument Panel Power Outlet for added worksite functionality 

Keyless Open & Push-Button Start for effortless access and ignition 

Power Sunroof brings added openness and natural light to the cabin 

Universal Home Remote for convenient garage and gate operation 

Technology & Connectivity 
13.4 GMC Premium Infotainment Touchscreen with Google Built-In functionality 

Wireless Apple CarPlay and Android Auto compatibility 

12 Digital Driver Information Centre with customizable vehicle information 

Bose Premium Audio System delivers rich, immersive sound quality 

Wireless Phone Projection for seamless smartphone integration 

Available Wi-Fi Hotspot Capability helps keep passengers connected 

Advanced Trailering App provides valuable towing information and assistance 

Safety & Driver Assistance 
Sierra HD Pro Safety and Pro Safety Plus technologies for enhanced confidence behind the wheel 

Forward Collision Alert with Automatic Emergency Braking 

Front Pedestrian Braking for added awareness in urban environments 

Lane Departure Warning and Following Distance Indicator 

Adaptive Cruise Control for relaxed highway driving 

HD Surround Vision provides a comprehensive view around the vehicle 

Bed View Camera enhances cargo and trailer visibility 

Trailer Side Blind Zone Alert for safer lane changes while towing 

Rear Cross Traffic Alert for increased confidence when reversing 

Front & Rear Park Assist simplifies parking and maneuvering 

Safety Alert Seat provides intuitive warning feedback 

Teen Driver Mode and Buckle-to-Drive help encourage safer 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 stance 

Chrome Front and Rear Bumpers with Chrome Exterior Accents 

Chrome Assist Steps provide easier cabin access 

LED Headlamps, LED Fog Lamps, and LED Roof Marker Lamps enhance visibility and style 

LED Cargo Bed Lighting improves functionality after dark 

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

Standard Box Configuration offers impressive cargo versatility 

EZ Lift Power Lock & Release Tailgate adds convenience during loading and unloading 

Heated Power Trailering Mirrors with Auto-Dimming Functionality 

Black Front Recovery Hooks provide added utility when conditions demand 

Whether youre hauling equipment to the jobsite, towing a large RV across the country, or navigating tough Canadian winters, the 2026 GMC Sierra 3500HD SLT delivers exceptional diesel power, advanced technology, and premium comfort. Its the perfect blend of heavy-duty capability and upscale refinement, built for drivers who expect their truck to work hard and look good doing it. 
 

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