Vehicle Details
Body Style
Truck
Engine
6.6L 8Cyl
Exterior Colour
Black
Interior Colour
Black
Transmission
Automatic
Drivetrain
4×4
Stock
303449
Fuel Type
Gasoline
Trim Details
4WD Crew Cab Long Box SLT
Description
The 2026 GMC Sierra 3500HD SLT delivers uncompromising heavy-duty capability paired with premium refinement and advanced technology. Built for those who demand serious strength without sacrificing comfort, this Crew Cab Long Box blends bold styling, intelligent features, and work-ready durability for any challenge ahead.Â
Performance & CapabilityÂ
Engine: 6.6L V8 Direct Injection engine delivering robust horsepower and torque for heavy-duty performanceÂ
Transmission: 10-speed automatic transmission engineered for smooth shifting and optimal power deliveryÂ
Drivetrain: 4WD system with Autotrac two-speed transfer case for confident traction in all conditionsÂ
Axle Ratio: 3.73 rear axle ratio for enhanced towing strength and hauling capabilityÂ
Suspension: Heavy-duty suspension system tuned for stability under load and long-haul comfortÂ
Trailering Equipment: Integrated trailer brake controller, hitch guidance with Hitch View, and advanced trailering appÂ
Differential: Automatic locking rear differential for improved traction on uneven or slippery terrainÂ
Cooling Systems: Engine and transmission oil coolers for sustained performance under demanding workloadsÂ
Drive Modes: Selectable drive modes to adapt performance for towing, hauling, and varying road conditionsÂ
Winter & Weather ComfortÂ
Heated Front Seats & Heated Steering Wheel for cold-weather comfortÂ
Remote Start System to pre-condition the cabin before you step insideÂ
Dual-Zone Automatic Climate Control for personalized temperature settingsÂ
Engine Block Heater for reliable starts in harsh winter climatesÂ
Deep-Tinted Glass and advanced sealing for improved insulation and cabin quietnessÂ
Interior Comfort & ConvenienceÂ
Front Bucket Seats with power adjustability and driver memory settingsÂ
Heated & Ventilated Front Seats for year-round comfortÂ
Rear Seat Storage Package for added practicality and organizationÂ
Wireless Charging Pad and multiple USB ports for seamless device connectivityÂ
Keyless Open & Push-Button Start for convenience on the goÂ
13.4" Premium Infotainment Touchscreen with Google Built-In and navigation capabilityÂ
12" Digital Driver Information Centre with customizable vehicle dataÂ
Bose® Premium Audio System delivering rich, immersive soundÂ
Power Windows, Power Locks, and Universal Home Remote for everyday easeÂ
Safety & Driver AssistanceÂ
GMC Sierra Pro Safety Suite with advanced driver assistance technologiesÂ
Forward Collision Alert with Automatic Emergency BrakingÂ
Lane Departure Warning and Following Distance IndicatorÂ
Front Pedestrian Braking for enhanced urban awarenessÂ
HD Rear Vision Camera for clear visibility while reversing or hitchingÂ
Trailer Monitoring & Assistance features for safer towing experiencesÂ
Teen Driver Mode and Buckle-to-Drive for added safety awarenessÂ
Exterior Styling & UtilityÂ
18" Machined Aluminum Wheels with dark grey metallic accents for a bold, refined lookÂ
Chrome Exterior Accents including mirror caps, door handles, and bumpersÂ
LED Headlamps, Fog Lamps, and Cargo Bed Lighting for enhanced visibilityÂ
EZ Lift Power Lock & Release Tailgate for easy bed accessÂ
Bed-Mounted 120V Power Outlet for jobsite or recreational useÂ
Rear Bumper CornerSteps for convenient access to the truck bedÂ
Heated, Power-Adjustable Trailering Mirrors with integrated lightingÂ
Onyx Black Exterior finish — sleek, commanding, and unmistakably premiumÂ
Whether you’re towing heavy equipment, tackling demanding job sites, or heading out on long-distance hauls, the 2026 GMC Sierra 3500HD SLT stands ready with exceptional strength, advanced technology, and refined comfort. It’s a heavy-duty truck built to exceed expectations — delivering capability with confidence and sophistication.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
Crew Cab Short Box 4-Wheel Drive AT4X
VIN: 3GTUUFE85TG349095
City: 12.2L/100 km • Hwy: 12L/100 km
4WD Crew Cab Long Box SLT
VIN: 1GT4UUE77TF270203
* 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