2026 GMC Sierra 3500HD

The 2026 GMC Sierra 3500HD SLE is engineered for drivers who demand uncompromising capability, heavy-duty durability, and modern technology. Built to tackle the toughest jobs while delivering everyday comfort, this powerful pickup combines legendary Duramax diesel performance, advanced trailering technology, and refined interior amenities. Whether youre hauling equipment, towing a large trailer, or taking on demanding worksites, the Sierra 3500HD SLE is built to perform with confidence. 
Performance & Capability 
Engine: Duramax 6.6L V8 Turbo-Diesel delivering exceptional torque, towing strength, and long-haul durability 

Transmission: Allison-inspired 10-speed automatic transmission engineered for smooth power delivery and heavy-duty performance 

Drivetrain: Autotrac Two-Speed 4-Wheel Drive 4WD system providing confident traction across challenging terrain and weather conditions 

Rear Axle Ratio: 3.42 rear axle optimized for towing performance and hauling capability 

Automatic Locking Rear Differential enhancing traction when conditions become demanding 

Heavy-Duty Suspension Package designed to support substantial payloads and trailer loads 

Engine Exhaust Brake assisting with downhill control and reducing brake wear while towing 

Heavy-Duty Air Filter, Engine Oil Cooler, and Transmission Oil Cooler for reliable performance under load 

Trailering Equipment Package including integrated trailer brake controller and advanced towing technologies 

Hitch Guidance with Hitch View simplifying trailer hookups and maneuvering 

In-Vehicle Trailering App providing trailer monitoring and towing information at your fingertips 

FlexRide Drive Mode System allowing optimized vehicle performance for changing road and worksite conditions 

Skid Plates and Black Front Recovery Hooks adding protection and confidence in rugged environments 

Winter & Weather Comfort 
Heated Driver and Front Passenger Seats providing welcome comfort during colder months 

Heated Steering Wheel helping keep winter driving comfortable 

Remote Vehicle Start allowing the cabin to warm up before you enter 

Dual-Zone Automatic Climate Control maintaining personalized comfort settings 

Engine Block Heater supporting reliable cold-weather starts 

Winter Grille Cover helping maintain engine temperatures in harsh winter conditions 

Deep-Tinted Glass enhancing privacy and helping reduce interior heat buildup 

Rear Window Defogger improving visibility during adverse weather 

Interior Comfort & Convenience 
Front Bucket Seats with Centre Console offering comfort, support, and practical storage 

10-Way Power Driver Seat allowing customized comfort for long workdays and road trips 

Power Sliding Rear Window adding ventilation and convenience 

Rear Seat Storage Package providing secure and organized cargo space inside the cabin 

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

Wireless Charging Pad helping keep compatible devices powered without cables 

Multiple USB Ports throughout the cabin for convenient charging and connectivity 

120-Volt Power Outlet in the cabin and Bed-Mounted 120-Volt Outlet for jobsite functionality 

Universal Home Remote providing easy access to compatible garage doors and security systems 

Wrapped Steering Wheel with integrated audio controls for added convenience 

Technology & Connectivity 
GMC Premium Infotainment System featuring a large 13.4-inch colour touchscreen 

Google Built-In Compatibility with navigation, voice assistance, and connected services 

Wireless Apple CarPlay and Android Auto integration 

12-Inch Reconfigurable Digital Driver Information Centre displaying key vehicle data and towing information 

SiriusXM Capability and available Wi-Fi Hotspot connectivity 

HD Rear Vision Camera improving visibility when reversing or connecting a trailer 

Premium user interface designed for easy access to navigation, towing, and vehicle functions 

Safety & Driver Assistance 
Sierra HD Pro Safety Package delivering advanced driver-assistance technologies 

Forward Collision Alert helping monitor potential hazards ahead 

Automatic Emergency Braking for added confidence in emergency situations 

Front Pedestrian Braking enhancing awareness in busy environments 

Lane Departure Warning helping drivers stay on course 

Adaptive Cruise Control reducing fatigue during highway travel 

Following Distance Indicator assisting with safe spacing from vehicles ahead 

HD Rear Vision Camera providing enhanced visibility while reversing 

Teen Driver Technology encouraging safer driving habits 

Tire Pressure Monitoring System for added peace of mind 

Exterior Styling & Utility 
Exterior Colour: Summit White clean, professional, and timeless with strong work-ready appeal 

18-Inch Machined Aluminum Wheels with Dark Grey Metallic Accents combining durability with modern style 

All-Terrain Tires providing dependable traction on worksites and rough roads 

Signature GMC Styling with bold grille design and commanding heavy-duty presence 

Chrome Front and Rear Bumpers delivering a durable and refined appearance 

LED Headlamps, LED Fog Lamps, and IntelliBeam Automatic High Beams enhancing visibility day and night 

LED Roof Marker Lamps emphasizing its heavy-duty capability 

LED Cargo Bed Lighting illuminating the box for nighttime loading and unloading 

EZ Lift Power Lock and Release Tailgate simplifying cargo access 

Rear Wheelhouse Liners helping protect the truck bed from debris and wear 

Power-Adjustable Heated Trailering Mirrors with integrated turn signals and power-folding functionality 

Black Assist Steps providing convenient cab access 

CornerStep Rear Bumper making bed access quick and easy 

Whether youre towing heavy equipment, hauling materials to the jobsite, or covering long distances with confidence, the 2026 GMC Sierra 3500HD SLE delivers professional-grade strength, advanced technology, and dependable comfort. Its a heavy-duty truck built to exceed expectations wherever work or adventure takes you. 
 

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
Tire Pressure Monitoring System auto learn, includes Tire Fill Alert (does not apply to spare tire)
Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching (Deleted with (ZW9) pickup bed delete.)
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.)
Rear Seat Belt Indicator (Requires Crew Cab or Double Cab model.)
Rear Seat Reminder (Requires Crew Cab or Double Cab model.)
OnStar Services capable (See onstar.ca for details and limitations. Services vary by model. Service plan required.)
Seat Belt Adjustable Guide Loops, front row only (Included and only available on Crew Cab and Double Cab models. Not available with (ZW9) pickup bed delete.)
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.)
HD Rear Vision Camera (Not available with (ZW9) pickup bed delete. Removed with (UV2) HD Surround Vision.)
Interior Equipment
Floor covering, colour-keyed carpeting
Steering wheel audio controls
Exterior Temperature Display located in radio display
Compass, located in instrument cluster
Window, power front, drivers express up/down
Door locks, power
Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
Seat trim, Cloth
Cruise control, steering wheel-mounted
Air conditioning, single-zone
Seat adjuster, driver 4-way manual
Seat adjuster, passenger 4-way manual
Seat, rear 60/40 folding bench (folds up), 3-passenger (includes child seat top tether anchor) (Not available with Regular Cab model.)
Steering column, Tilt-Wheel, manual with wheel locking security feature
Windows, power rear, express down (Not available on Regular Cab models.)
Air vents, rear (Not available with Regular Cab model.)
Mirror, inside rearview, manual tilt
Seats, front 40/20/40 split-bench with covered armrest storage and under-seat storage (lockable)
Window, power front, passenger express down
USB Ports, 2, Charge/Data ports located on instrument panel
Steering wheel, wrapped
Driver Information Centre, enhanced, 12.3" diagonal reconfigurable multicolour digital display
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
Floor mats, rubberized-vinyl front (Included and only available with (B30) colour-keyed carpeting. Deleted when LPO floor liners are ordered.)
Floor mats, rubberized-vinyl rear (Requires Crew Cab or Double Cab model. Included and only available with (B30) colour-keyed carpeting. Deleted when LPO floor liners are ordered.)
Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet) (Deleted with (ZW9) pickup bed delete.)
Exterior Equipment
Single Rear Wheels
CornerStep, rear bumper
Mouldings, beltline, stainless steel
Glass, deep-tinted
Door handles, body-colour
Bumper, front chrome lower
Bumper, rear chrome with bumper CornerSteps
Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door (Deleted with (ZW9) pickup bed delete.)
Lamps, cargo area, cab mounted integrated with centre high mount stop lamp, with switch in bank on left side of steering wheel
Tailgate, standard (Deleted with (ZW9) pickup bed delete.)
Tailgate and bed rail protection caps, top (Deleted with (ZW9) pickup bed delete.)
IntelliBeam, automatic high beam on/off (Included and only available with (PDI) Sierra HD Pro Safety.)
Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light (Deleted with (ZW9) pickup bed delete.)
Bed Step, Black integrated on forward portion of bed on driver and passenger side (Not available with (ZW9) pickup bed delete.)
Headlamps, Animated LED projectors, LED turn signals and Daytime Running Lamps
Taillamps, LED Signature Tail, Incandescent Brake, Turn & Reverse Lamps (Requires single rear wheels.)
Wheels, 18" (45.7 cm) machined aluminum wheel with Dark Grey metallic accents (Requires single rear wheels. Included with (RFX) X31 Off-Road and Protection Package.)
Tires, LT275/70R18E all-terrain, blackwall (Requires single rear wheels. Included with (RFX) X31 Off-Road and Protection Package.)
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. Available to order when (ZW9) pickup bed delete and (QF6) LT275/70R18E all-terrain, blackwall tires are ordered.)
Mirrors, outside power-adjustable vertical trailering with heated upper glass lower convex mirrors, integrated turn signals, manual folding/extending (extends 3.31" [84.25mm]), Black
Cargo tie downs (12), fixed, rated at 500 lbs per corner
Grille, Chrome surround with Chrome insert bars
Entertainment Equipment
Bluetooth for phone connectivity to vehicle infotainment system
Audio system feature, 6-speaker system (Requires Crew Cab or Double Cab model.)
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
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
Steering, Recirculating Ball with smart flow power steering system
Rear axle, 3.73 ratio (Requires (L8T) 6.6L V8 gas engine.)
Recovery hooks, front, frame-mounted, Black
Suspension Package (Not available with (X31) Off-Road Package.)
Capless Fuel Fill (Requires (L8T) 6.6L gas V8 engine. Not included with (ZW9) pickup bed delete.)
Push Button Start
Air filter, heavy-duty
Transfer case, two-speed electronic shift with push button controls (Requires 4WD models.)
Auto-locking rear differential
Pickup bed includes bed assist step (Deleted when (ZW9) pickup bed delete is ordered.)
GVWR, 11,700 lbs. (5307 kg) with single rear wheels (Included and only available with model TK30943 model and (L8T) 6.6L V8 gas engine. Requires single rear wheels.)
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