Vehicle Details
Body Style
Truck
Engine
6.6L 8Cyl
Exterior Colour
White
Interior Colour
Black
Transmission
Automatic
Drivetrain
4×4
Stock
303368
Fuel Type
Diesel
Trim Details
4WD Crew Cab Long Box SLE
Description
The 2026 GMC Sierra 3500HD SLE Crew Cab Long Box 4WD is engineered for serious work and uncompromising strength, combining heavy-duty capability with refined comfort and advanced technology. Built to handle demanding jobs with confidence, this Sierra HD delivers durability, intelligent trailering, and everyday usability in one commanding package.Â
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Performance & CapabilityÂ
Engine: Duramax 6.6L V8 Turbo-Diesel delivering exceptional torque and heavy-duty performanceÂ
Transmission: 10-speed automatic transmission engineered for smooth power delivery and towing controlÂ
Drivetrain: Autotrac 4-Wheel Drive (4WD) system for maximum traction across challenging terrainÂ
Suspension: Heavy-duty suspension tuned for stability under load and long-haul comfortÂ
Axle Ratio: 3.42 rear axle designed for optimal towing strength and payload capabilityÂ
Trailering Equipment: Integrated trailer brake controller, hitch guidance with Hitch View, and advanced trailering appÂ
Exhaust Brake: Integrated diesel exhaust brake for enhanced downhill control while towingÂ
Cooling Systems: Engine oil cooler and transmission oil cooler for sustained performance under heavy loadsÂ
Off-Road Confidence: Automatic locking rear differential and hill-ready durability for tough job sitesÂ
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Winter & Weather ComfortÂ
Heated Front Seats and Heated Steering Wheel for cold-weather driving comfortÂ
Dual-Zone Automatic Climate Control for personalized cabin temperature settingsÂ
Remote Start System for convenient cabin pre-conditioningÂ
Engine Block Heater for reliable starts in extreme coldÂ
Rear Window Defogger and Deep-Tinted Glass for improved visibilityÂ
Winter Grille Cover to help maintain engine temperature in harsh climatesÂ
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Interior Comfort & ConvenienceÂ
Front 40/20/40 Split-Bench Seat offering versatility for passengers and cargoÂ
10-Way Power Driver Seat for personalized comfort on long drivesÂ
Power Sliding Rear Window for ventilation and convenienceÂ
Rear Seat Storage Package for organized interior utilityÂ
Keyless Open & Push-Button Start for ease of accessÂ
Wireless Apple CarPlay® & Android Autoâ„¢ compatibilityÂ
13.4" GMC Premium Infotainment Touchscreen with Google Built-In and navigation capabilityÂ
12" Digital Driver Information Center with customizable vehicle data displayÂ
Multiple USB ports and 120V power outlets for worksite and personal device chargingÂ
6-Speaker Audio System providing clear, balanced soundÂ
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Safety & Driver AssistanceÂ
GMC Pro Safety and Safety Plus Packages for enhanced driver awarenessÂ
Forward Collision Alert with Automatic Emergency BrakingÂ
Lane Departure Warning and Front Pedestrian BrakingÂ
Adaptive Cruise Control for added highway convenienceÂ
HD Surround Vision and Bed View Camera for improved visibility when maneuvering or traileringÂ
Trailer Side Blind Zone Alert and Trailer Camera Provisions for confident towingÂ
Rear Cross Traffic Alert and Front & Rear Park AssistÂ
Following Distance Indicator for safer highway drivingÂ
Teen Driver Mode and Buckle-to-Drive safety featuresÂ
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Exterior Styling & UtilityÂ
18" Machined Aluminum Wheels with dark grey metallic accents for a rugged, functional lookÂ
Exterior Colour: Summit White — clean, durable, and work-readyÂ
Chrome Front and Rear Bumpers adding a touch of bold refinementÂ
LED Headlamps, Fog Lamps, and Roof Marker Lamps for maximum visibilityÂ
EZ Lift Power Lock & Release Tailgate for easy cargo accessÂ
Long Box Configuration providing maximum cargo space for large jobsÂ
Spray-On Bedliner and LED Cargo Bed Lighting for durability and convenienceÂ
120V Bed-Mounted Power Outlet for tools and equipmentÂ
Chrome Assist Steps and CornerSteps for easy cabin and bed accessÂ
Heated, Power-Adjustable Trailering Mirrors with integrated turn signalsÂ
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Whether you’re hauling heavy equipment, towing large trailers, or taking on demanding worksites, the 2026 GMC Sierra 3500HD SLE delivers uncompromising diesel power, advanced trailering technology, and rugged dependability. It’s built to perform when it matters most, combining strength, intelligence, and comfort in a true heavy-duty truck.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 (Requires Crew Cab or Double Cab model.)
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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 (Deleted with (ZW9) pickup bed delete.)
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Bumper, front chrome lower
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Bumper, rear chrome with bumper CornerSteps
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CornerStep, rear bumper
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Bed Step, Black integrated on forward portion of bed on driver and passenger side (Not available with (ZW9) pickup bed delete.)
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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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Lamps, cargo area, cab mounted integrated with centre high mount stop lamp, with switch in bank on left side of steering wheel
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Heated Mirrors
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Integrated Turn Signal Mirrors
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Power Mirror(s)
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Privacy Glass
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Tailgate, standard (Deleted with (ZW9) pickup bed delete.)
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Tailgate and bed rail protection caps, top (Deleted with (ZW9) pickup bed delete.)
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Split Bench Seat
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Cloth Seats
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Seat adjuster, driver 4-way manual
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Seat adjuster, passenger 4-way manual
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Pass-Through Rear Seat
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Rear Bench Seat
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Floor covering, colour-keyed carpeting
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Floor Mats
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Adjustable Steering Wheel
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Steering Wheel Audio Controls
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GMC Premium information Display- 13.4" diagonal Multicolour touch screen
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Exterior Temperature Display located in radio display
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Compass, located in instrument cluster
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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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Keyless Entry
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Keyless Start
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Cruise Control
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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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Air vents, rear (Not available with Regular Cab model.)
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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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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 electronic shift with push button controls (Requires 4WD models.)
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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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Suspension Package (Not available with (X31) Off-Road Package.)
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Power Steering
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4-Wheel Disc Brakes
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ABS
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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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Trailering Information Label provides max trailer ratings for tongue weight, conventional, gooseneck and 5th wheel trailering (Not available with (ZW9) pickup bed delete.)
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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 (Deleted with (ZW9) pickup bed delete.)
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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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Driver Restriction Features
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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.)
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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 Capacity6
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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)4142
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Curb Weight - Rear (lbs)2918
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Gross Vehicle Weight Rating Cap (lbs)12250
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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)21460
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Fifth Wheel Hitch - Max Tongue Wt. (lbs)5365
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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 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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