Vehicle Details
Body Style
Truck
Engine
6.6L 8Cyl
Exterior Colour
White
Interior Colour
Black
Transmission
Automatic
Drivetrain
4×4
Stock
303437
Fuel Type
Diesel
Trim Details
4WD Crew Cab Standard Box SLT
Description
The 2026 GMC Sierra 3500HD SLT 4WD Crew Cab Standard Box is a true heavy-duty powerhouse that blends professional-grade diesel capability, refined SLT comfort, and advanced trailering intelligence. Built for demanding workloads and everyday confidence, it delivers strength, control, and modern sophistication in a bold full-size pickup.Â
Â
Performance & CapabilityÂ
Engine: Duramax 6.6L V8 Turbo Diesel delivering massive torque for serious towing, hauling, and long-distance durabilityÂ
Transmission: 10-speed automatic transmission engineered for smooth, responsive shifting under heavy loadÂ
Drivetrain: Autotrac 4WD system providing confident traction across snow, mud, gravel, and highway conditionsÂ
Axle Ratio: 3.42 rear axle ratio balancing towing strength with highway efficiencyÂ
Suspension: Heavy-duty suspension system tuned for stability, payload control, and jobsite durabilityÂ
Trailering Equipment: Integrated trailer brake controller, Hitch View, trailer camera provisions, and trailering app for complete towing controlÂ
Gooseneck/5th Wheel Prep Package enabling confident handling of large commercial and recreational trailersÂ
Engine Brake System: Exhaust brake and advanced downhill control for safe, controlled descents with heavy loadsÂ
Cooling Systems: Engine oil cooler, transmission oil cooler, and heavy-duty air filtration system for sustained performanceÂ
Off-Road Confidence: Skid plates, automatic locking rear differential, and rugged chassis tuning for tough terrain and jobsite conditionsÂ
Â
Interior Comfort & ConvenienceÂ
SLT Jet Black interior offering a refined, professional-grade cabin environmentÂ
Front 40/20/40 split-bench seating with versatile passenger and cargo flexibilityÂ
Power-adjustable driver and front passenger seats for personalized comfortÂ
Heated front seats and heated steering wheel for cold-weather comfort and controlÂ
Dual-zone automatic climate control with rear air vents for consistent cabin comfortÂ
Remote start system and push-button ignition for modern convenience in all seasonsÂ
Power windows with express functionality and deep-tint glass for comfort and privacyÂ
Chrome assist steps and rear corner steps for easy cabin and bed accessÂ
Carpeted flooring with all-season mats for durability and interior protectionÂ
Rear seat storage and fold-flat versatility for added practicalityÂ
Â
Technology & ConnectivityÂ
13.4" GMC Premium Infotainment System with Google Built-In for intuitive navigation, media, and vehicle controlÂ
12" fully digital Driver Information Center with customizable vehicle data displaysÂ
Wireless Apple CarPlay® and Android Autoâ„¢ for seamless smartphone integrationÂ
Wi-Fi hotspot capability for productivity and entertainment on the goÂ
Wireless charging pad and multiple USB/120V outlets for device convenienceÂ
6-speaker audio system delivering clear, balanced sound throughout the cabinÂ
Remote keyless entry, push-button start, and universal home remote for everyday easeÂ
Â
Safety & Driver AssistanceÂ
GMC Pro Safety suite designed to enhance awareness and driver confidenceÂ
Forward Collision Alert with Automatic Emergency BrakingÂ
Lane Departure Warning with Lane Keep Assist supportÂ
Front Pedestrian Braking for added urban safety protectionÂ
Rear Cross Traffic Alert and Trailer Side Blind Zone Alert for towing awarenessÂ
HD Rear Vision Camera with Hitch Guidance for precise trailer alignmentÂ
Front and Rear Park Assist for low-speed maneuvering confidenceÂ
Following Distance Indicator and Adaptive safety alerts for highway driving supportÂ
Teen Driver Mode and Buckle-to-Drive system for added safety monitoringÂ
Â
Exterior Styling & UtilityÂ
Bold Summit White exterior with chrome accents for a strong, professional appearanceÂ
20" bright aluminum wheels with dark painted pockets for a modern, rugged stanceÂ
LED headlamps, fog lamps, and cargo box lighting for maximum visibility in all conditionsÂ
Chrome front and rear bumpers paired with black recovery hooks for durability and functionÂ
GMC MultiPro EZ Lift tailgate with power lock and release for versatile cargo accessÂ
Spray-on bedliner and LED bed lighting for long-lasting bed protection and utilityÂ
Heated, power-adjustable trailering mirrors with integrated signals for towing confidenceÂ
Gooseneck/5th wheel prep package for serious heavy-duty towing applicationsÂ
Active aero shutters and aerodynamic enhancements for improved efficiencyÂ
Rugged steel-frame construction engineered for commercial-grade workloadsÂ
Â
The 2026 Sierra 3500HD SLT is built for those who demand uncompromising diesel strength paired with modern refinement. Whether towing heavy equipment, navigating harsh conditions, or handling daily professional demands, it delivers confidence, durability, and advanced capability in every mile.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, 11,550 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.)
-
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.)
-
Alternator, 170 amps (Requires (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
-
Brake lining wear indicator
-
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 CodeMGM
-
Trans Type10
-
Trans Description Cont.Automatic
-
First Gear Ratio (:1)4.54
-
Second Gear Ratio (:1)2.87
-
Third Gear Ratio (:1)2.06
-
Fourth Gear Ratio (:1)1.72
-
Fifth Gear Ratio (:1)1.48
-
Sixth Gear Ratio (:1)1.26
-
Seventh Gear Ratio (:1)1.00
-
Eighth Gear Ratio (:1)0.85
-
Ninth Gear Ratio (:1)0.69
-
Tenth Gear Ratio (:1)0.63
-
Reverse Ratio (:1)4.54
-
Passenger Capacity6
-
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)5600
-
Gross Axle Wt Rating - Rear (lbs)7250
-
Curb Weight - Front (lbs)4032
-
Curb Weight - Rear (lbs)2928
-
Gross Vehicle Weight Rating Cap (lbs)12100
-
Gross Combined Wt Rating (lbs)30000
-
Dead Weight Hitch - Max Trailer Wt. (lbs)5000
-
Dead Weight Hitch - Max Tongue Wt. (lbs)500
-
Wt Distributing Hitch - Max Trailer Wt. (lbs)20000
-
Wt Distributing Hitch - Max Tongue Wt. (lbs)2000
-
Fifth Wheel Hitch - Max Trailer Wt. (lbs)21600
-
Fifth Wheel Hitch - Max Tongue Wt. (lbs)5400
-
Maximum Trailering Capacity (lbs)20000
-
Engine Order CodeL5P
-
Engine TypeTurbocharged Diesel V8
-
Displacement6.6L
-
Fuel SystemDirect Injection
-
SAE Net Horsepower @ RPM470 @ 2800
-
SAE Net Torque @ RPM975 @ 1600
-
Engine Oil CoolerYes
-
Cold Cranking Amps @ 0° F (Primary)720
-
Maximum Alternator Capacity (amps)220
-
Frame TypeHydroformed
-
Suspension Type - FrontShort/Long Arm w/Torsion Bars
-
Suspension Type - Rear3-Stage Multi-Leaf
-
Axle Type - FrontIndependent
-
Axle Ratio (:1) - Front3.42
-
Axle Ratio (:1) - Rear3.42
-
Shock Absorber Diameter - Front (mm)51
-
Shock Absorber Diameter - Rear (mm)51
-
Stabilizer Bar Diameter - Front (in)1.38
-
Front Tire Order CodeQF9
-
Rear Tire Order CodeQF9
-
Spare Tire Order CodeZYG
-
Front Tire SizeLT275/65R20
-
Rear Tire SizeLT275/65R20
-
Spare Tire SizeLT275/70R18
-
Front Wheel Size (in)20 x 8.5
-
Rear Wheel Size (in)20 x 8.5
-
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)52.7
-
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)158.94
-
Length, Overall (in)250.75
-
Width, Max w/o mirrors (in)81.85
-
Height, Overall (in)80.87
-
Cab to Axle (in)42.17
-
Ground Clearance, Front (in)11.18
-
Ground Clearance, Rear (in)11.18
-
Cargo Box Length @ Floor (in)82.2
-
Cargo Box Width @ Floor (in)71.4
-
Cargo Box Width @ Wheelhousings (in)51.85
-
Cargo Box (Area) Height (in)21
-
Cargo Volume (ft³)69.5
No matches were found.
Similar Vehicles
4WD Crew Cab Standard Box AT4
VIN: 1GT4UVEY0TF232696
Crew Cab Short Box 4-Wheel Drive AT4X
VIN: 3GTUUFE89TG357376
City: 12.2L/100 km • Hwy: 12L/100 km
Crew Cab Short Box 4-Wheel Drive AT4X
VIN: 3GTUUFE85TG349095
City: 12.2L/100 km • Hwy: 12L/100 km
4WD Crew Cab Standard Box AT4
VIN: 1GT4UVEYXTF256746
Crew Cab Short Box 4-Wheel Drive Denali
VIN: 1GTUUGE82TZ298418
City: 10.7L/100 km • Hwy: 9.3L/100 km
4WD Crew Cab Standard Box AT4
VIN: 1GT4UVEY4TF262722
* 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