Vehicle Details
Body Style
Truck
Engine
6.6L 8Cyl
Exterior Colour
White
Interior Colour
Black
Transmission
Automatic
Drivetrain
4×4
Stock
303855
Fuel Type
Diesel
Trim Details
4WD Crew Cab Standard Box SLT
Description
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.Â
Performance & CapabilityÂ
Engine: Duramax® 6.6L V8 Turbo-Diesel delivering exceptional torque, towing confidence, and long-haul durabilityÂ
Transmission: Allison® 10-Speed Automatic Transmission engineered for smooth power delivery and optimized performanceÂ
Drivetrain: Autotrac® 4WD system for confident traction in changing road and weather conditionsÂ
Rear Axle Ratio: 3.42 ratio designed for balanced towing capability and highway efficiencyÂ
Trailering Equipment: Integrated trailer brake controller, hitch guidance, Hitch View, and advanced trailering technologiesÂ
Gooseneck/5th Wheel Prep Package for enhanced towing versatility and heavy-duty hauling capabilityÂ
Exhaust Brake and Heavy-Duty Cooling Systems for greater control while towing and descending gradesÂ
Automatic Locking Rear Differential for added traction on challenging terrainÂ
Digital Variable Steering Assist for confident handling and improved maneuverabilityÂ
FlexRide Drive Mode System allows performance adjustments based on road and towing conditionsÂ
Winter & Weather ComfortÂ
Heated & Ventilated Front Seats for year-round comfortÂ
Heated Rear Outboard Seats for second-row passenger convenienceÂ
Heated Steering Wheel for cold-weather driving comfortÂ
Remote Start System to warm or cool the cabin before departureÂ
Dual-Zone Automatic Climate Control for personalized comfort settingsÂ
Engine Block Heater for dependable cold-weather startsÂ
Rain-Sensing Windshield Wipers automatically adjust to changing weather conditionsÂ
Winter Grille Cover enhances cold-weather efficiencyÂ
Interior Comfort & ConvenienceÂ
Premium Front Bucket Seats with power adjustments and lumbar supportÂ
Driver Memory Settings for seat and mirror preferencesÂ
Power Sliding Rear Window for added ventilation and convenienceÂ
Rear Seat Storage Package helps keep gear organized and secureÂ
Wireless Charging Pad keeps compatible devices powered without cablesÂ
Multiple USB Charging Ports throughout the cabinÂ
120V Instrument Panel Power Outlet for added worksite functionalityÂ
Keyless Open & Push-Button Start for effortless access and ignitionÂ
Power Sunroof brings added openness and natural light to the cabinÂ
Universal Home Remote for convenient garage and gate operationÂ
Technology & ConnectivityÂ
13.4" GMC Premium Infotainment Touchscreen with Google Built-In functionalityÂ
Wireless Apple CarPlay® and Android Autoâ„¢ compatibilityÂ
12" Digital Driver Information Centre with customizable vehicle informationÂ
Bose® Premium Audio System delivers rich, immersive sound qualityÂ
Wireless Phone Projection for seamless smartphone integrationÂ
Available Wi-Fi Hotspot Capability helps keep passengers connectedÂ
Advanced Trailering App provides valuable towing information and assistanceÂ
Safety & Driver AssistanceÂ
Sierra HD Pro Safety and Pro Safety Plus technologies for enhanced confidence behind the wheelÂ
Forward Collision Alert with Automatic Emergency BrakingÂ
Front Pedestrian Braking for added awareness in urban environmentsÂ
Lane Departure Warning and Following Distance IndicatorÂ
Adaptive Cruise Control for relaxed highway drivingÂ
HD Surround Vision provides a comprehensive view around the vehicleÂ
Bed View Camera enhances cargo and trailer visibilityÂ
Trailer Side Blind Zone Alert for safer lane changes while towingÂ
Rear Cross Traffic Alert for increased confidence when reversingÂ
Front & Rear Park Assist simplifies parking and maneuveringÂ
Safety Alert Seat provides intuitive warning feedbackÂ
Teen Driver Mode and Buckle-to-Drive help encourage safer driving habitsÂ
Exterior Styling & UtilityÂ
Exterior Colour: Summit White — clean, timeless, and professional in appearanceÂ
20" Bright Face Aluminum Wheels with Dark Painted Pockets create a bold stanceÂ
Chrome Front and Rear Bumpers with Chrome Exterior AccentsÂ
Chrome Assist Steps provide easier cabin accessÂ
LED Headlamps, LED Fog Lamps, and LED Roof Marker Lamps enhance visibility and styleÂ
LED Cargo Bed Lighting improves functionality after darkÂ
Spray-On Bedliner helps protect the cargo box from wear and damageÂ
Standard Box Configuration offers impressive cargo versatilityÂ
EZ Lift Power Lock & Release Tailgate adds convenience during loading and unloadingÂ
Heated Power Trailering Mirrors with Auto-Dimming FunctionalityÂ
Black Front Recovery Hooks provide added utility when conditions demandÂ
Whether you're 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. It’s 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.Â
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Packages & Options
Standard Equipment
Technical Specifications
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AM/FM Stereo
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Auxiliary Audio Input
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Bluetooth Connection
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MP3 Player
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Navigation System
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Smart Device Integration
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Requires Subscription
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Satellite Radio
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Audio system feature, 6-speaker system
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WiFi Hotspot
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Aluminum Wheels
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Tires - Front All-Terrain
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Tires - Rear All-Terrain
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Conventional Spare Tire
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Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
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Bumper, front chrome lower
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CornerStep, rear bumper
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Mouldings, beltline, stainless steel
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Cargo tie downs (12), fixed, rated at 500 lbs per corner
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Grille, Chrome surround with Chrome insert bars
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Daytime Running Lights
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LED Headlights
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Automatic Highbeams
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Fog Lamps
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Taillamps, Animated LED Signature Tail, Stop, turn and Reverse lamps
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Heated Mirrors
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Integrated Turn Signal Mirrors
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Power Folding Mirrors
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Power Mirror(s)
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Mirror caps, chrome
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Intermittent Wipers
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Rain Sensing Wipers
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Variable Speed Intermittent Wipers
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Privacy Glass
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Tailgate, standard
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Tailgate and bed rail protection caps, top
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Split Bench Seat
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Leather Seats
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Driver Adjustable Lumbar
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Power Driver Seat
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Passenger Adjustable Lumbar
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Power Passenger Seat
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Pass-Through Rear Seat
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Rear Bench Seat
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Heated Front Seat(s)
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Mirror Memory
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Seat Memory
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Floor covering, colour-keyed carpeting
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Floor Mats
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Heated Steering Wheel
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Adjustable Steering Wheel
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Steering Wheel Audio Controls
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Driver Information Centre, enhanced, 12.3" diagonal reconfigurable multicolour digital display
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Exterior Temperature Display located in radio display
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Compass, located in instrument cluster
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Tire Pressure Monitor
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Window, power front, drivers express up/down
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Power Windows
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Power Door Locks
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Remote Engine Start
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Keyless Entry
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Keyless Start
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Cruise Control
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Security System
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Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
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Auxiliary Audio Input
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MP3 Player
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USB ports, (2) charge-only, rear
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A/C
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Climate Control
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Multi-Zone A/C
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Air vents, rear
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Rear Defrost
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Auto-Dimming Rearview Mirror
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Assist handles, front A-pillar mounted for driver and passenger, rear B-pillar mounted
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8 Cylinder Engine
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Gasoline Fuel
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10-Speed A/T
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A/T
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Rear axle, 3.73 ratio (Requires (L8T) 6.6L V8 gas engine.)
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Running Boards/Side Steps
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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.)
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Keyless Start
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Air filter, heavy-duty
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Air filtration monitoring
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Transfer case, two-speed active electronic Autotrac with push button control
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Locking/Limited Slip Differential
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Four Wheel Drive
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Cooling, external engine oil cooler
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Cooling, auxiliary external transmission oil cooler
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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.)
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Alternator, 170 amps (Requires (L8T) 6.6L V8 gas engine.)
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Trailer brake controller, integrated
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Tow Hooks
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Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
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Power Steering
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4-Wheel Disc Brakes
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ABS
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Brake lining wear indicator
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Capless Fuel Fill (Requires (L8T) 6.6L gas V8 engine.)
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Automatic Highbeams
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Front Collision Mitigation
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Front Collision Warning
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Lane Departure Warning
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Tow Hitch
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ProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (UET) In-vehicle Trailering App
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Trailering Information Label provides max trailer ratings for tongue weight, conventional, gooseneck and 5th wheel trailering
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Front Collision Mitigation
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Front Collision Warning
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Stability Control
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Traction Control
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Daytime Running Lights
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Driver Air Bag
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Front Head Air Bag
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Front Side Air Bag
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Passenger Air Bag
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Passenger Air Bag Sensor
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Rear Head Air Bag
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Requires Subscription
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Telematics
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Back-Up Camera
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Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching
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Lane Departure Warning
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Following Distance Indicator (Included and only available with (PDI) Sierra HD Pro Safety.)
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Rear Seat Reminder
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Driver Restriction Features
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Rear Seat Belt Indicator (Requires Crew Cab or Double Cab model.)
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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)
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Tire Pressure Monitor
No matches were found.
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Vehicle NameGMC Sierra 3500HD
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Body StyleCrew Cab Pickup
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Body CodeE63
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DrivetrainFour Wheel Drive
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Trans Order CodeMGM
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Trans Type10
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Trans Description Cont.Automatic
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First Gear Ratio (:1)4.54
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Second Gear Ratio (:1)2.87
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Third Gear Ratio (:1)2.06
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Fourth Gear Ratio (:1)1.72
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Fifth Gear Ratio (:1)1.48
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Sixth Gear Ratio (:1)1.26
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Seventh Gear Ratio (:1)1.00
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Eighth Gear Ratio (:1)0.85
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Ninth Gear Ratio (:1)0.69
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Tenth Gear Ratio (:1)0.63
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Reverse Ratio (:1)4.54
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Passenger Capacity5
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Front Head Room (in)39.88
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Front Leg Room (in)44.53
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Front Shoulder Room (in)66.02
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Front Hip Room (in)61.18
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Second Head Room (in)40.12
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Second Leg Room (in)43.4
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Second Shoulder Room (in)65.3
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Second Hip Room (in)60.24
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Gross Axle Wt Rating - Front (lbs)5600
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Gross Axle Wt Rating - Rear (lbs)7250
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Curb Weight - Front (lbs)4032
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Curb Weight - Rear (lbs)2928
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Gross Vehicle Weight Rating Cap (lbs)12100
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Gross Combined Wt Rating (lbs)30000
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Dead Weight Hitch - Max Trailer Wt. (lbs)5000
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Dead Weight Hitch - Max Tongue Wt. (lbs)500
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Wt Distributing Hitch - Max Trailer Wt. (lbs)20000
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Wt Distributing Hitch - Max Tongue Wt. (lbs)2000
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Fifth Wheel Hitch - Max Trailer Wt. (lbs)21600
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Fifth Wheel Hitch - Max Tongue Wt. (lbs)5400
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Maximum Trailering Capacity (lbs)20000
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Engine Order CodeL5P
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Engine TypeTurbocharged Diesel V8
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Displacement6.6L
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Fuel SystemDirect Injection
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SAE Net Horsepower @ RPM470 @ 2800
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SAE Net Torque @ RPM975 @ 1600
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Engine Oil CoolerYes
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Cold Cranking Amps @ 0° F (Primary)720
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Maximum Alternator Capacity (amps)220
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Frame TypeHydroformed
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Suspension Type - FrontShort/Long Arm w/Torsion Bars
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Suspension Type - Rear3-Stage Multi-Leaf
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Axle Type - FrontIndependent
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Axle Ratio (:1) - Front3.42
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Axle Ratio (:1) - Rear3.42
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Shock Absorber Diameter - Front (mm)51
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Shock Absorber Diameter - Rear (mm)51
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Stabilizer Bar Diameter - Front (in)1.38
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Front Tire Order CodeQF9
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Rear Tire Order CodeQF9
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Spare Tire Order CodeZYG
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Front Tire SizeLT275/65R20
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Rear Tire SizeLT275/65R20
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Spare Tire SizeLT275/70R18
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Front Wheel Size (in)20 x 8.5
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Rear Wheel Size (in)20 x 8.5
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Spare Wheel Size (in)18 x 8
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Front Wheel MaterialAluminum
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Rear Wheel MaterialAluminum
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Spare Wheel MaterialSteel
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Steering TypePwr Recirculating Ball
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Steering Ratio (:1), At LockN/A
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Turning Diameter - Curb to Curb (ft)52.7
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Turning Diameter - Wall to Wall (ft)N/A
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Brake TypePwr
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Brake ABS System4-Wheel
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Disc - FrontYes
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Disc - RearYes
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Front Brake Rotor Diam x Thickness (in)14 x 1.6
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Rear Brake Rotor Diam x Thickness (in)14.1 x 1.3
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Fuel Tank Capacity, Approx (L)136
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Wheelbase (in)158.94
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Length, Overall (in)250.75
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Width, Max w/o mirrors (in)81.85
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Height, Overall (in)80.87
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Cab to Axle (in)42.17
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Ground Clearance, Front (in)11.18
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Ground Clearance, Rear (in)11.18
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Cargo Box Length @ Floor (in)82.2
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Cargo Box Width @ Floor (in)71.4
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Cargo Box Width @ Wheelhousings (in)51.85
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Cargo Box (Area) Height (in)21
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Cargo Volume (ft³)69.5
No matches were found.
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