Vehicle Details
Body Style
Truck
Engine
6.6L 8Cyl
Exterior Colour
Black
Interior Colour
Black
Transmission
Automatic
Drivetrain
4×4
Stock
303836
Fuel Type
Gasoline
Trim Details
4WD Crew Cab Long Box SLT
Description
The 2026 GMC Sierra 3500HD SLT Crew Cab Long Box combines heavy-duty capability, premium comfort, and advanced technology into a truck built to handle demanding workloads with confidence. Designed for drivers who need serious towing power without sacrificing refinement, this Sierra HD delivers bold styling, intelligent trailering features, and durable performance for both work and everyday driving.Â
Performance & CapabilityÂ
Engine: Powerful 6.6L V8 Direct Injection engine delivering impressive strength, durability, and dependable heavy-duty performanceÂ
Transmission: Smooth and responsive 10-speed automatic transmission engineered for confident towing and haulingÂ
Drivetrain: Autotrac 4-Wheel Drive (4WD) system providing enhanced traction and control in challenging road and weather conditionsÂ
Suspension: Standard Suspension Package tuned for stability, durability, and load-carrying confidenceÂ
Rear Axle Ratio: 3.73 rear axle optimized for towing capability and heavy-duty performanceÂ
Trailering Equipment: Integrated trailer brake controller, Hitch Guidance with Hitch View, advanced trailering app, and comprehensive towing technologiesÂ
Off-Road Capability: Automatic locking rear differential and black front recovery hooks for enhanced traction and rugged confidenceÂ
Heavy-Duty Components: Engine oil cooler, transmission oil cooler, heavy-duty air filter, and engine air filtration monitor supporting demanding workloadsÂ
Digital Variable Steering Assist helping improve handling precision and maneuverabilityÂ
Active Aero Shutters helping enhance efficiency and aerodynamic performanceÂ
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Winter & Weather ComfortÂ
Heated & Ventilated Front Seats providing year-round comfort in changing climatesÂ
Heated Steering Wheel for added warmth during colder morningsÂ
Remote Vehicle Start allowing the cabin to warm up or cool down before you enterÂ
Dual-Zone Automatic Climate Control for personalized driver and passenger comfortÂ
Rain-Sensing Windshield Wipers automatically adapting to changing weather conditionsÂ
Engine Block Heater for dependable cold-weather startsÂ
Deep-Tinted Glass helping reduce glare and improve cabin comfortÂ
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Interior Comfort & ConvenienceÂ
Spacious Crew Cab Interior with premium Jet Black upholstery and refined SLT finishesÂ
Front Bucket Seats with power-adjustable driver and front passenger seating plus memory settingsÂ
Rear Seat Storage Package adding practical interior versatility and organizationÂ
Wireless Charging Pad and multiple USB ports throughout the cabin for seamless device connectivityÂ
Keyless Open & Push-Button Start for convenient everyday operationÂ
Wireless Apple CarPlay® & Android Autoâ„¢ integration for effortless smartphone connectivityÂ
13.4" GMC Premium Infotainment Touchscreen with Google Built-In compatibility and navigation capabilityÂ
12" Digital Driver Information Centre with customizable vehicle and towing informationÂ
Bose® Premium Audio System delivering rich and immersive sound quality throughout the cabinÂ
Power windows, illuminated vanity mirrors, and a floor-mounted centre console enhancing comfort and convenience on long drivesÂ
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Safety & Driver AssistanceÂ
Sierra HD Pro Safety technologies designed to enhance awareness and driver confidenceÂ
Forward Collision Alert with Automatic Emergency BrakingÂ
Lane Departure Warning helping maintain safer highway positioningÂ
Front Pedestrian Braking for added awareness in urban environmentsÂ
Following Distance Indicator and Cruise Control supporting relaxed highway drivingÂ
HD Rear Vision Camera assisting with parking, hitching, and maneuveringÂ
IntelliBeam automatic high beams adjusting to changing nighttime driving conditionsÂ
Teen Driver Mode and Buckle-to-Drive features encouraging safer driving habitsÂ
Tire Pressure Monitoring System helping maintain optimal tire performance and safetyÂ
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Exterior Styling & UtilityÂ
Exterior Colour: Onyx Black — bold, commanding, and professionally refinedÂ
18" Machined Aluminum Wheels with Dark Grey Metallic accents paired with all-terrain tires for a rugged yet upscale appearanceÂ
Chrome Front and Rear Bumpers, Chrome Mirror Caps, and Chrome Door Handles enhancing premium SLT stylingÂ
LED Headlamps, LED Fog Lamps, LED Cargo Bed Lighting, and roof marker lamps improving visibility and functionalityÂ
Heated Power Trailering Mirrors with auto-dimming functionality designed for confident towing visibilityÂ
EZ Lift Power Lock & Release Tailgate offering added convenience and accessibilityÂ
Long Box cargo bed providing exceptional hauling capability and versatility for work or recreationÂ
120V Bed-Mounted and Instrument Panel Power Outlets adding practical jobsite and travel functionalityÂ
Rear Bumper CornerSteps and integrated bed lighting making cargo access easier day or nightÂ
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Whether you're towing heavy equipment, hauling large loads, or traveling long distances with confidence, the 2026 GMC Sierra 3500HD SLT Crew Cab Long Box delivers professional-grade strength, advanced technology, and premium comfort in one exceptionally capable heavy-duty truck. It’s built to work hard while keeping every drive refined, connected, and comfortable.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, 11,700 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.)
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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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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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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
-
Body StyleCrew Cab Pickup
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Body CodeE63
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DrivetrainFour Wheel Drive
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Trans Order CodeMKM
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Trans Type10
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Trans Description Cont.Automatic
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First Gear Ratio (:1)
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Second Gear Ratio (:1)
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Third Gear Ratio (:1)
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Fourth Gear Ratio (:1)
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Fifth Gear Ratio (:1)
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Sixth Gear Ratio (:1)
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Seventh Gear Ratio (:1)
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Eighth Gear Ratio (:1)
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Ninth Gear Ratio (:1)
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Tenth Gear Ratio (:1)
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Reverse Ratio (:1)
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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)5200
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Gross Axle Wt Rating - Rear (lbs)7250
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Curb Weight - Front (lbs)4142
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Curb Weight - Rear (lbs)2918
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Gross Vehicle Weight Rating Cap (lbs)11700
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Gross Combined Wt Rating (lbs)26000
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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)16000
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Wt Distributing Hitch - Max Tongue Wt. (lbs)1600
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Fifth Wheel Hitch - Max Trailer Wt. (lbs)18230
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Fifth Wheel Hitch - Max Tongue Wt. (lbs)4557
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Maximum Trailering Capacity (lbs)20000
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Engine Order CodeL8T
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Engine TypeGas V8
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Displacement6.6L
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Fuel SystemDirect Injection
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SAE Net Horsepower @ RPM401 @ 5200
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SAE Net Torque @ RPM464 @ 4000
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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)170
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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) - Front3.73
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Axle Ratio (:1) - Rear3.73
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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 CodeQF6
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Rear Tire Order CodeQF6
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Spare Tire Order CodeZYG
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Front Tire SizeLT275/70R18
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Rear Tire SizeLT275/70R18
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Spare Tire SizeLT275/70R18
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Front Wheel Size (in)18 x 8
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Rear Wheel Size (in)18 x 8
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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)57.0
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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)172
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Length, Overall (in)266.77
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Width, Max w/o mirrors (in)81.85
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Height, Overall (in)80.67
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Cab to Axle (in)55.24
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Ground Clearance, Front (in)11.14
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Ground Clearance, Rear (in)11.14
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Cargo Box Length @ Floor (in)98.22
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Cargo Box Width @ Floor (in)71.4
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Cargo Box Width @ Wheelhousings (in)50.55
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Cargo Box (Area) Height (in)21
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Cargo Volume (ft³)83.5
No matches were found.
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