Vehicle Details
Body Style
Truck
Engine
6.6L 8Cyl
Exterior Colour
Silver
Interior Colour
Black
Transmission
Automatic
Drivetrain
4×4
Stock
303895
Fuel Type
Diesel
Trim Details
4WD Crew Cab Standard Box SLT
Description
The 2026 GMC Sierra 3500HD SLT blends heavy-duty capability, premium craftsmanship, and advanced towing technology into one exceptionally capable truck. Powered by the legendary Duramax® Turbo-Diesel engine and equipped with GMC's latest trailering innovations, this Sierra HD is built to handle demanding jobs while surrounding occupants with comfort, refinement, and confidence.Â
Performance & CapabilityÂ
Engine: Duramax® 6.6L V8 Turbo-Diesel delivering exceptional torque, towing capability, and long-haul durabilityÂ
Transmission: Allison®-inspired 10-speed automatic transmission engineered for smooth, intelligent shifting under loadÂ
Drivetrain: Autotrac® 4-Wheel Drive (4WD) with two-speed transfer case for confident traction in all conditionsÂ
Rear Axle Ratio: 3.42 ratio optimized for towing performance and highway efficiencyÂ
Automatic Locking Rear Differential for enhanced traction on challenging surfacesÂ
Exhaust Brake System helping improve downhill control while towingÂ
Heavy-Duty Air Filtration and Cooling Systems designed for demanding workloadsÂ
Standard Heavy-Duty Suspension Package delivering stability and ride confidenceÂ
Digital Variable Steering Assist for precise handling and controlÂ
Engine Block Heater for reliable cold-weather operationÂ
220-Amp Alternator supporting demanding electrical and trailering needsÂ
Trailering & Work-Ready CapabilityÂ
Integrated Trailer Brake Controller for confident towing managementÂ
Gooseneck / 5th-Wheel Prep Package ready for serious hauling applicationsÂ
GMC ProGrade Trailering System with In-Vehicle Trailering AppÂ
Hitch Guidance with Hitch View simplifying trailer connectionsÂ
Trailer Camera Provisions for expanded visibility while towingÂ
Bed View Camera providing a clear look into the cargo boxÂ
Trailer Side Blind Zone Alert enhancing awareness on the highwayÂ
Factory Trailering Equipment Package engineered for heavy-duty performanceÂ
Spray-On Bedliner protecting the cargo box from wear and tearÂ
120-Volt Bed-Mounted Power Outlet providing convenient power at the job siteÂ
LED Cargo Bed Lighting for improved visibility after darkÂ
Rear Wheelhouse Liners helping protect the bed from road debrisÂ
Interior Comfort & ConvenienceÂ
Front Bucket Seats with premium SLT interior appointmentsÂ
Heated & Ventilated Front Seats for year-round comfortÂ
Heated Rear Outboard Seats providing second-row passenger comfortÂ
Power Driver and Front Passenger Seats with customizable adjustmentsÂ
Driver Memory Settings for seat and mirror positioningÂ
Heated Steering Wheel for added cold-weather convenienceÂ
Dual-Zone Automatic Climate Control maintaining personalized comfortÂ
Power Sliding Rear Window for enhanced ventilation and convenienceÂ
Rear Seat Storage Package maximizing interior utilityÂ
Remote Vehicle Start System allowing cabin pre-conditioningÂ
Keyless Open & Push-Button Start for effortless accessÂ
Universal Home Remote for garage doors and compatible devicesÂ
Power Sunroof bringing fresh air and natural light into the cabinÂ
All-Weather Floor Liners providing added interior protectionÂ
Technology & ConnectivityÂ
13.4-Inch GMC Premium Infotainment Touchscreen with Google Built-InÂ
12-Inch Reconfigurable Digital Driver Information CentreÂ
Wireless Apple CarPlay® and Android Autoâ„¢ compatibilityÂ
Wireless Charging Pad for convenient device chargingÂ
Bose® Premium Audio System delivering rich, immersive soundÂ
Multiple USB Ports throughout the cabin for device connectivityÂ
SiriusXM® Capability for expanded entertainment optionsÂ
Wi-Fi Hotspot Capability helping keep passengers connectedÂ
Steering Wheel-Mounted Audio and Vehicle Controls for added convenienceÂ
Safety & Driver AssistanceÂ
GMC Pro Safety Suite enhancing driver awareness and confidenceÂ
Adaptive Cruise Control helping maintain a selected following distanceÂ
Forward Collision Alert with Automatic Emergency BrakingÂ
Front Pedestrian Braking for added protection in urban environmentsÂ
Lane Departure Warning helping keep you on courseÂ
Following Distance Indicator promoting safer highway drivingÂ
HD Surround Vision providing a comprehensive view around the truckÂ
Front & Rear Park Assist simplifying parking and maneuveringÂ
Rear Cross Traffic Alert for added confidence when reversingÂ
Trailer Side Blind Zone Alert helping monitor adjacent lanes while towingÂ
Safety Alert Seat providing directional safety notificationsÂ
IntelliBeam® Automatic High Beams adapting to traffic conditionsÂ
Teen Driver Technology and Buckle-to-Drive features promoting responsible driving habitsÂ
Exterior Styling & UtilityÂ
Exterior Colour: Sterling Metallic — a sophisticated finish that perfectly complements the Sierra HD's bold designÂ
20-Inch Bright Face Aluminum Wheels with Dark Painted Pockets creating a premium and commanding stanceÂ
Chrome Front and Rear Bumpers enhancing upscale appealÂ
Chrome Mirror Caps and Chrome Door Handles for refined stylingÂ
Chrome Assist Steps providing easy cabin accessÂ
LED Headlamps, LED Fog Lamps, and LED Roof Marker Lamps for exceptional visibilityÂ
Rain-Sensing Windshield Wipers automatically adapting to changing weatherÂ
Heated Power-Adjustable Trailering Mirrors with Auto-Dimming FunctionÂ
EZ Lift Power Lock & Release Tailgate simplifying cargo accessÂ
Black Front Recovery Hooks adding functionality and rugged appealÂ
CornerStep Rear Bumper improving bed accessibilityÂ
Whether you're hauling heavy equipment, towing a large RV, or tackling demanding workdays, the 2026 GMC Sierra 3500HD SLT delivers uncompromising diesel power, advanced towing technology, and premium comfort. It's the perfect combination of heavy-duty capability, intelligent innovation, and refined GMC craftsmanship.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
-
Body StyleCrew Cab Pickup
-
Body CodeE63
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DrivetrainFour Wheel Drive
-
Trans Order CodeMGM
-
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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