Vehicle Details
Body Style
Truck
Engine
6.6L 8Cyl
Exterior Colour
Black
Interior Colour
Black
Transmission
Automatic
Drivetrain
4×4
Stock
303447
Fuel Type
Gasoline
Trim Details
4WD Crew Cab Long Box SLT
Description
The 2026 GMC Sierra 3500HD SLT 4WD Crew Cab Long Box embodies professional-grade strength, premium refinement, and uncompromising heavy-duty capability. Built for serious towing, demanding workloads, and long-haul comfort, it delivers confidence in every mile — whether on the jobsite, highway, or backcountry route.Â
Performance & CapabilityÂ
Engine: 6.6L V8 DI VVT engine engineered for massive power, durability, and confident heavy-duty performance under loadÂ
Transmission: 10-speed automatic transmission delivering smooth, intelligent shifting for optimal torque and efficiencyÂ
Drivetrain: Advanced 4WD system with Autotrac two-speed transfer case for superior traction in extreme conditionsÂ
Axle Ratio: Heavy-duty rear axle engineered for maximum towing strength and stability under stressÂ
Suspension: Standard HD suspension system tuned for payload control, ride stability, and long-distance enduranceÂ
Trailering Strength: Integrated trailer brake controller, Hitch Guidance with Hitch View, and advanced trailering app for precision controlÂ
Towing Equipment: Factory-installed trailering package designed for gooseneck, fifth-wheel, and conventional towing capabilityÂ
Locking Differential: Automatic locking rear differential for enhanced traction on loose, uneven, or slippery surfacesÂ
Cooling Systems: Heavy-duty engine and transmission cooling systems designed for sustained towing performanceÂ
Diesel Efficiency Option: Available turbo-diesel engineering for enhanced torque delivery and long-haul fuel efficiencyÂ
Hill & Terrain Control: Integrated systems for controlled descent and stability on steep or unpredictable terrainÂ
Â
Winter & All-Season ComfortÂ
Heated and ventilated front seats designed for year-round comfort in extreme Canadian climatesÂ
Heated rear outboard seats and heated steering wheel for full-cabin winter readinessÂ
Remote start system for pre-conditioning cabin temperature before entryÂ
Dual-zone automatic climate control ensuring balanced comfort for driver and passengersÂ
Engine block heater for reliable cold-weather starts in deep freeze conditionsÂ
Â
Interior Comfort & ConvenienceÂ
Premium SLT interior with refined materials and professional-grade durabilityÂ
Power-adjustable front seating with memory settings for personalized driving positionÂ
Spacious Crew Cab configuration with expansive rear-seat legroom and storage solutionsÂ
Power sliding rear window for improved airflow and jobsite versatilityÂ
Wireless charging pad and multiple USB/120V power outlets throughout cabin and consoleÂ
Keyless open and push-button start for seamless daily operationÂ
Rear seat storage system enhancing cabin organization and practicalityÂ
Leather-wrapped steering wheel with integrated controls for audio, phone, and driver informationÂ
Â
Technology & ConnectivityÂ
13.4-inch GMC Premium Infotainment system with Google built-in functionality and advanced navigation capabilityÂ
12-inch customizable digital driver display providing real-time vehicle and towing dataÂ
HD Surround Vision and multiple trailer camera views for enhanced maneuvering and jobsite awarenessÂ
Wireless Apple CarPlay® and Android Autoâ„¢ for seamless smartphone integrationÂ
Built-in Wi-Fi hotspot capability for connectivity in remote or rural work environmentsÂ
Digital trailer monitoring tools through integrated trailering appÂ
Premium Bose® audio system delivering clear, immersive cabin soundÂ
Â
Safety & Driver AssistanceÂ
GMC Pro Safety suite offering advanced collision mitigation and driver awareness systemsÂ
Forward Collision Alert with Automatic Emergency Braking for proactive protectionÂ
Lane Departure Warning with Lane Keep Assist for highway confidenceÂ
Front and Rear Park Assist for precision maneuvering in tight spacesÂ
Rear Cross Traffic Alert and Trailer Side Blind Zone Alert for safer towing transitionsÂ
HD Rear Vision Camera and Bed View Camera for enhanced visibility around cargo and trailerÂ
Following Distance Indicator and Adaptive Cruise Control for long-haul driving supportÂ
Teen Driver Mode and Buckle-to-Drive for enhanced safety awareness and accountabilityÂ
Â
Exterior Styling & UtilityÂ
Bold SLT styling with chrome accents and heavy-duty proportions designed for presence and functionÂ
18-inch machined aluminum wheels engineered for durability under loadÂ
Chrome front and rear bumpers delivering a refined yet rugged appearanceÂ
LED headlamps, fog lamps, and roof marker lighting for maximum visibility in all conditionsÂ
EZ Lift power tailgate with MultiPro functionality for flexible cargo access and jobsite utilityÂ
Long box configuration offering maximum cargo capacity for equipment, tools, and materialsÂ
Spray-on bedliner and integrated LED cargo lighting for durability and nighttime functionalityÂ
Black recovery hooks and reinforced tow points for added confidence in demanding environmentsÂ
Â
The 2026 GMC Sierra 3500HD SLT stands as a true heavy-duty workhorse refined for modern expectations — combining immense towing capability, advanced technology, and premium interior comfort. Built to handle the toughest tasks with ease, it delivers strength, intelligence, and sophistication in one commanding package designed for professionals who expect nothing less than total capability.Â
Â
Packages & Options
Standard Equipment
Technical Specifications
-
AM/FM Stereo
-
Auxiliary Audio Input
-
Bluetooth Connection
-
MP3 Player
-
Navigation System
-
Smart Device Integration
-
Requires Subscription
-
Satellite Radio
-
Audio system feature, 6-speaker system
-
WiFi Hotspot
-
Aluminum Wheels
-
Tires - Front All-Terrain
-
Tires - Rear All-Terrain
-
Conventional Spare Tire
-
Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
-
Bumper, front chrome lower
-
CornerStep, rear bumper
-
Mouldings, beltline, stainless steel
-
Cargo tie downs (12), fixed, rated at 500 lbs per corner
-
Grille, Chrome surround with Chrome insert bars
-
Daytime Running Lights
-
LED Headlights
-
Automatic Highbeams
-
Fog Lamps
-
Taillamps, Animated LED Signature Tail, Stop, turn and Reverse lamps
-
Heated Mirrors
-
Integrated Turn Signal Mirrors
-
Power Folding Mirrors
-
Power Mirror(s)
-
Mirror caps, chrome
-
Intermittent Wipers
-
Rain Sensing Wipers
-
Variable Speed Intermittent Wipers
-
Privacy Glass
-
Tailgate, standard
-
Tailgate and bed rail protection caps, top
-
Split Bench Seat
-
Leather Seats
-
Driver Adjustable Lumbar
-
Power Driver Seat
-
Passenger Adjustable Lumbar
-
Power Passenger Seat
-
Pass-Through Rear Seat
-
Rear Bench Seat
-
Heated Front Seat(s)
-
Mirror Memory
-
Seat Memory
-
Floor covering, colour-keyed carpeting
-
Floor Mats
-
Heated Steering Wheel
-
Adjustable Steering Wheel
-
Steering Wheel Audio Controls
-
Driver Information Centre, enhanced, 12.3" diagonal reconfigurable multicolour digital display
-
Exterior Temperature Display located in radio display
-
Compass, located in instrument cluster
-
Tire Pressure Monitor
-
Window, power front, drivers express up/down
-
Power Windows
-
Power Door Locks
-
Remote Engine Start
-
Keyless Entry
-
Keyless Start
-
Cruise Control
-
Security System
-
Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
-
Auxiliary Audio Input
-
MP3 Player
-
USB ports, (2) charge-only, rear
-
A/C
-
Climate Control
-
Multi-Zone A/C
-
Air vents, rear
-
Rear Defrost
-
Auto-Dimming Rearview Mirror
-
Assist handles, front A-pillar mounted for driver and passenger, rear B-pillar mounted
-
8 Cylinder Engine
-
Gasoline Fuel
-
10-Speed A/T
-
A/T
-
Rear axle, 3.73 ratio (Requires (L8T) 6.6L V8 gas engine.)
-
Running Boards/Side Steps
-
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.)
-
Keyless Start
-
Air filter, heavy-duty
-
Air filtration monitoring
-
Transfer case, two-speed active electronic Autotrac with push button control
-
Locking/Limited Slip Differential
-
Four Wheel Drive
-
Cooling, external engine oil cooler
-
Cooling, auxiliary external transmission oil cooler
-
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.)
-
Trailer brake controller, integrated
-
Tow Hooks
-
Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
-
Power Steering
-
4-Wheel Disc Brakes
-
ABS
-
Capless Fuel Fill (Requires (L8T) 6.6L gas V8 engine.)
-
Automatic Highbeams
-
Front Collision Mitigation
-
Front Collision Warning
-
Lane Departure Warning
-
Tow Hitch
-
ProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (UET) In-vehicle Trailering App
-
Trailering Information Label provides max trailer ratings for tongue weight, conventional, gooseneck and 5th wheel trailering
-
Front Collision Mitigation
-
Front Collision Warning
-
Stability Control
-
Traction Control
-
Daytime Running Lights
-
Driver Air Bag
-
Front Head Air Bag
-
Front Side Air Bag
-
Passenger Air Bag
-
Passenger Air Bag Sensor
-
Rear Head Air Bag
-
Requires Subscription
-
Telematics
-
Back-Up Camera
-
Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching
-
Lane Departure Warning
-
Following Distance Indicator (Included and only available with (PDI) Sierra HD Pro Safety.)
-
Rear Seat Reminder
-
Driver Restriction Features
-
Rear Seat Belt Indicator (Requires Crew Cab or Double Cab model.)
-
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)
-
Tire Pressure Monitor
No matches were found.
-
Vehicle NameGMC Sierra 3500HD
-
Body StyleCrew Cab Pickup
-
Body CodeE63
-
DrivetrainFour Wheel Drive
-
Trans Order CodeMKM
-
Trans Type10
-
Trans Description Cont.Automatic
-
First Gear Ratio (:1)
-
Second Gear Ratio (:1)
-
Third Gear Ratio (:1)
-
Fourth Gear Ratio (:1)
-
Fifth Gear Ratio (:1)
-
Sixth Gear Ratio (:1)
-
Seventh Gear Ratio (:1)
-
Eighth Gear Ratio (:1)
-
Ninth Gear Ratio (:1)
-
Tenth Gear Ratio (:1)
-
Reverse Ratio (:1)
-
Passenger Capacity5
-
Front Head Room (in)39.88
-
Front Leg Room (in)44.53
-
Front Shoulder Room (in)66.02
-
Front Hip Room (in)61.18
-
Second Head Room (in)40.12
-
Second Leg Room (in)43.4
-
Second Shoulder Room (in)65.3
-
Second Hip Room (in)60.24
-
Gross Axle Wt Rating - Front (lbs)5200
-
Gross Axle Wt Rating - Rear (lbs)7250
-
Curb Weight - Front (lbs)4142
-
Curb Weight - Rear (lbs)2918
-
Gross Vehicle Weight Rating Cap (lbs)11700
-
Gross Combined Wt Rating (lbs)26000
-
Dead Weight Hitch - Max Trailer Wt. (lbs)5000
-
Dead Weight Hitch - Max Tongue Wt. (lbs)500
-
Wt Distributing Hitch - Max Trailer Wt. (lbs)16000
-
Wt Distributing Hitch - Max Tongue Wt. (lbs)1600
-
Fifth Wheel Hitch - Max Trailer Wt. (lbs)18230
-
Fifth Wheel Hitch - Max Tongue Wt. (lbs)4557
-
Maximum Trailering Capacity (lbs)20000
-
Engine Order CodeL8T
-
Engine TypeGas V8
-
Displacement6.6L
-
Fuel SystemDirect Injection
-
SAE Net Horsepower @ RPM401 @ 5200
-
SAE Net Torque @ RPM464 @ 4000
-
Engine Oil CoolerYes
-
Cold Cranking Amps @ 0° F (Primary)720
-
Maximum Alternator Capacity (amps)170
-
Frame TypeHydroformed
-
Suspension Type - FrontShort/Long Arm w/Torsion Bars
-
Suspension Type - Rear3-Stage Multi-Leaf
-
Axle Type - FrontIndependent
-
Axle Ratio (:1) - Front3.73
-
Axle Ratio (:1) - Rear3.73
-
Shock Absorber Diameter - Front (mm)51
-
Shock Absorber Diameter - Rear (mm)51
-
Stabilizer Bar Diameter - Front (in)1.38
-
Front Tire Order CodeQF6
-
Rear Tire Order CodeQF6
-
Spare Tire Order CodeZYG
-
Front Tire SizeLT275/70R18
-
Rear Tire SizeLT275/70R18
-
Spare Tire SizeLT275/70R18
-
Front Wheel Size (in)18 x 8
-
Rear Wheel Size (in)18 x 8
-
Spare Wheel Size (in)18 x 8
-
Front Wheel MaterialAluminum
-
Rear Wheel MaterialAluminum
-
Spare Wheel MaterialSteel
-
Steering TypePwr Recirculating Ball
-
Steering Ratio (:1), At LockN/A
-
Turning Diameter - Curb to Curb (ft)57.0
-
Turning Diameter - Wall to Wall (ft)N/A
-
Brake TypePwr
-
Brake ABS System4-Wheel
-
Disc - FrontYes
-
Disc - RearYes
-
Front Brake Rotor Diam x Thickness (in)14 x 1.6
-
Rear Brake Rotor Diam x Thickness (in)14.1 x 1.3
-
Fuel Tank Capacity, Approx (L)136
-
Wheelbase (in)172
-
Length, Overall (in)266.77
-
Width, Max w/o mirrors (in)81.85
-
Height, Overall (in)80.67
-
Cab to Axle (in)55.24
-
Ground Clearance, Front (in)11.14
-
Ground Clearance, Rear (in)11.14
-
Cargo Box Length @ Floor (in)98.22
-
Cargo Box Width @ Floor (in)71.4
-
Cargo Box Width @ Wheelhousings (in)50.55
-
Cargo Box (Area) Height (in)21
-
Cargo Volume (ft³)83.5
No matches were found.
Similar Vehicles
Crew Cab Short Box 4-Wheel Drive AT4X
VIN: 3GTUUFE89TG357376
City: 12.2L/100 km • Hwy: 12L/100 km
4WD Crew Cab Long Box SLT
VIN: 1GT4UUE7XTF270633
Crew Cab Standard Box 4-Wheel Drive AT4
VIN: 1GTUUEE84TZ326918
City: 11L/100 km • Hwy: 9.9L/100 km
4WD Crew Cab Long Box SLT
VIN: 1GT4UUE78TF270789
Crew Cab Short Box 4-Wheel Drive AT4X
VIN: 3GTUUFE85TG349095
City: 12.2L/100 km • Hwy: 12L/100 km
* Every reasonable effort is made to ensure the accuracy of the information listed above. Vehicle pricing, incentives, options (including standard equipment), and technical specifications listed is for the 2026 GMC Sierra 3500HD SLT may not match the exact vehicle displayed. Please confirm the accuracy of this information with a sales representative.
Calculate Payments
Finance
Lease