Vehicle Details
Body Style
Truck
Engine
6.6L 8Cyl
Exterior Colour
White
Interior Colour
Brown
Transmission
Automatic
Drivetrain
4×4
Stock
303369
Fuel Type
Diesel
Trim Details
4WD Crew Cab Standard Box SLT
Description
The 2026 GMC Sierra 3500HD SLT blends premium comfort, heavy-duty capability, and bold styling into one commanding package. With its refined chrome accents, advanced trailering tech, and diesel-powered strength, this full-size pickup is built for those who demand serious performance without sacrificing everyday luxury.Â
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Performance & CapabilityÂ
Engine: 6.6L Duramax® V8 Turbo-Diesel delivering exceptional torque and heavy-duty pulling powerÂ
Transmission: Allison® 10-speed automatic for smooth, responsive shifting under loadÂ
Drivetrain: Autotrac® 4WD system for confident traction in all road and jobsite conditionsÂ
Suspension: Off-road tuned suspension with Rancho® shocks for durability and controlÂ
Axle Ratio: 3.42 rear axle optimized for towing strength and highway efficiencyÂ
Trailering Equipment: Integrated trailer brake controller, hitch guidance with Hitch View, and advanced trailering appÂ
Gooseneck/5th Wheel Prep Package for maximum towing versatilityÂ
Exhaust Brake System for enhanced downhill control when hauling heavy loadsÂ
Heavy-Duty Cooling Systems including engine oil and transmission coolersÂ
Hill Descent Control and skid plates for added confidence off-road or on steep terrainÂ
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Winter & Weather ComfortÂ
Heated & Ventilated Front Seats for year-round comfortÂ
Heated Steering Wheel to keep hands warm during cold morningsÂ
Dual-Zone Automatic Climate Control for personalized cabin temperaturesÂ
Remote Start System to pre-condition the cabin before entryÂ
Engine Block Heater for dependable cold-weather startsÂ
Deep-Tinted Glass and rear window defogger for improved visibility in all conditionsÂ
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Interior Comfort & ConvenienceÂ
Front Bucket Seats with power adjustability and driver memory settingsÂ
Premium Dark Walnut/Slate interior trim for a refined, upscale cabin feelÂ
Wireless Charging Pad and multiple USB/120V outlets for device connectivityÂ
Keyless Open & Push-Button Start for seamless access and ignitionÂ
Power Windows with express up/down functionality for added convenienceÂ
Spacious Crew Cab configuration with rear seat storage for added practicalityÂ
Auto-Dimming Rearview Mirror and illuminated vanity mirrors for everyday easeÂ
Wrapped Steering Wheel with integrated audio controlsÂ
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Technology & InfotainmentÂ
13.4" GMC Premium Infotainment Touchscreen with Google Built-In and NavigationÂ
12.3" Digital Driver Information Center with customizable display settingsÂ
Wireless Apple CarPlay® & Android Autoâ„¢ for seamless smartphone integrationÂ
Bose® Premium Audio System delivering rich, immersive soundÂ
Wi-Fi® Hotspot capability to stay connected on the goÂ
SiriusXM® capability for expanded entertainment optionsÂ
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Safety & Driver AssistanceÂ
GMC Pro Safety suite for enhanced driver awarenessÂ
Forward Collision Alert with Automatic Emergency BrakingÂ
Lane Departure Warning for added highway confidenceÂ
Front Pedestrian Braking for urban safetyÂ
Following Distance Indicator to maintain safe spacingÂ
HD Rear Vision Camera for improved visibility when reversingÂ
Front & Rear Park Assist for easier maneuvering in tight spacesÂ
Teen Driver Mode and Buckle-to-Drive for added safety awarenessÂ
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Exterior Styling & UtilityÂ
20" Bright Face Aluminum Wheels with dark painted accents for a bold presenceÂ
Chrome Exterior Accents including mirror caps, door handles, and bumpersÂ
Exterior Colour: Summit White — clean, classic, and commandingÂ
LED Headlamps, Fog Lamps, and Cargo Bed Lighting for superior visibilityÂ
Spray-On Bedliner for added durability and cargo protectionÂ
EZ Lift Power Lock & Release Tailgate for effortless functionalityÂ
Chrome Assist Steps for easy entry and exitÂ
Heated Power Trailering Mirrors with auto-dimming and task lightingÂ
Rear Bumper CornerSteps for quick and convenient bed accessÂ
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Whether you're hauling heavy equipment, towing with confidence, or driving in refined comfort, the 2026 GMC Sierra 3500HD SLT delivers premium craftsmanship, advanced technology, and uncompromising strength. It’s the ideal balance of capability and sophistication — built for those who expect more from every drive.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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