Vehicle Details
Body Style
Truck
Engine
6.6L 8Cyl
Exterior Colour
Silver
Interior Colour
Black
Transmission
Automatic
Drivetrain
4×4
Stock #
302367
Trim Details
Crew Cab Standard Box 4-Wheel Drive SLT
The 2026 GMC Sierra 2500HD SLT blends heavy-duty power, professional-grade engineering, and elevated refinement. With its confident stance, chrome accents, and advanced technology, this three-quarter-ton pickup delivers the strength you need and the comfort you want — built for drivers who expect capability without compromise.Â
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Performance & CapabilityÂ
Engine: 6.6L Duramax Turbo-Diesel V8 delivering exceptional torque, towing strength, and long-distance confidenceÂ
Transmission: 10-speed automatic tuned for smooth, controlled power delivery under loadÂ
Drivetrain: Autotrac two-speed 4WD transfer case enabling sure-footed traction in mud, snow, and uneven terrainÂ
Axle Ratio: 3.42 rear axle balancing power and efficiency for heavy-duty useÂ
Trailering Equipment: Integrated trailer brake controller, hitch guidance with camera views, in-vehicle trailering app, and gooseneck/5th-wheel prep for serious towing capabilityÂ
Exhaust Brake & Heavy-Duty Cooling Systems providing confidence on steep grades with heavy loadsÂ
Suspension: Off-road-ready components with skid plates, twin-tube shocks, and automatic locking rear differentialÂ
Drive Modes: FlexRide mode selector optimizing handling based on road, weather, and towing demandsÂ
All-Terrain Tires & 20" Aluminum Wheels adding capability with a premium lookÂ
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Winter & Weather ComfortÂ
Heated & Ventilated Front Seats for year-round comfort — warm in winter, cool in summerÂ
Heated Steering Wheel & Heated Front Outboard Seats for cold-weather drivingÂ
Remote Start allowing the cabin to warm or cool before you step inÂ
Winter Grille Cover & Engine Block Heater ensuring reliable operation in extreme coldÂ
Dual-Zone Automatic Climate Control with rear air vents for balanced comfortÂ
Rear Window Defogger & Rain-Sensing Wipers improving visibility in harsh weatherÂ
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Interior Comfort & ConvenienceÂ
Premium Jet Black Interior with refined stitching and soft-touch materialsÂ
Front Bucket Seats with Full Power Adjustments & Driver Memory offering personalized support and comfortÂ
Rear Seat Storage Package adding hidden under-seat storage and clever cabin organizationÂ
Wireless Charging Pad and multiple USB/120V outlets for seamless device connectivityÂ
Keyless Open & Push-Button Start enhancing convenience on busy daysÂ
Centre Floor Console providing organized space for gear, documents, and daily essentialsÂ
Power Windows with Express Features & Power Door Locks for everyday ease of useÂ
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Technology & ConnectivityÂ
13.4" GMC Premium Infotainment Touchscreen with Google Built-In, navigation, and intuitive controlsÂ
12" Digital Driver Display presenting customizable vehicle information at a glanceÂ
Wireless Apple CarPlay® & Android Autoâ„¢ for effortless smartphone integrationÂ
Bose Premium Audio System delivering rich, high-end sound throughout the cabinÂ
HD Rear Vision Camera & Bed View Lighting improving visibility while maneuvering or hooking up trailersÂ
Wi-Fi Hotspot Capability keeping work and entertainment connected on the roadÂ
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Safety & Driver AssistanceÂ
GMC Pro Safety Suite offering essential confidence and awarenessÂ
Forward Collision Alert & Automatic Emergency Braking enhancing protection in busy trafficÂ
Lane Departure Warning & Following Distance Indicator supporting safer highway travelÂ
Front Pedestrian Braking & Rear Pedestrian Alert adding extra layers of cautionÂ
Trailer Side Blind Zone Alerts improving confidence when towing wide or long loadsÂ
HD Rear Vision Camera, Rear Seat Reminder & Rear Seat Belt Alerts enhancing everyday safetyÂ
Teen Driver Mode & Buckle-to-Drive promoting good habits for new driversÂ
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Exterior Styling & UtilityÂ
Sterling Metallic Exterior giving the truck a sleek, upscale professional appearanceÂ
Chrome Front & Rear Bumpers, Chrome Mirror Caps & Door Handles adding refined accentsÂ
GMC MultiPro Tailgate with configurable steps, load stops, and work surface functionalityÂ
Spray-On Bedliner & Bed-Mounted 120V Outlet for serious worksite durabilityÂ
Chrome Assist Steps & CornerSteps making cab and bed access easyÂ
LED Headlamps, Fog Lamps, Roof Marker Lamps & Cargo Bed Lighting providing high-visibility confidence day or nightÂ
Black Front Recovery Hooks offering rugged practicality for tough situationsÂ
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Whether towing equipment, navigating challenging terrain, or tackling demanding jobs, the 2026 GMC Sierra 2500HD SLT delivers a masterful blend of heavy-duty capability, smart technology, and premium comfort — a truck built to work hard while keeping you comfortable and connected every mile.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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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, rear chrome with bumper CornerSteps
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Bed Step, Black integrated on forward portion of bed on driver and passenger side
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CornerStep, rear bumper
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Cargo tie downs (12), fixed, rated at 500 lbs (226.8 kg) per corner
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Wheelhouse liners, rear
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Mouldings, beltline, chrome
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Grille (Chrome surround with Chrome insert bars.)
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Daytime Running Lights
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Automatic Highbeams
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Fog Lamps
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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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LED Cargo Area Lighting located in cargo bed activated with switch on centre switch bank or key fob
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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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Privacy Glass
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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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Door handles, chrome
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Tailgate, standard
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Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light
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Split Bench Seat
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Leather Seats
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Pass-Through Rear Seat
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Rear Bench Seat
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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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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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Steering wheel, wrapped
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Heated Steering Wheel
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Steering Wheel Audio Controls
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Adjustable Steering Wheel
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Driver Information Centre, enhanced, 12.3" diagonal reconfigurable multicolour digital display
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Rear Seat Reminder
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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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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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Remote Engine 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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Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)
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Air vents, 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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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, 10,850 lbs. (4921 kg) (Included and only available with TK20743 model and (L8T) 6.6L V8 gas engine with 18", 20" or 22" wheels.)
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Keyless Start
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Transfer case, two-speed active, electronic Autotrac with push button control (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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Air filter, heavy-duty
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Air filtration monitoring
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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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In-Vehicle Trailering App, System includes checklist, trailer maintenance reminders, trailer security alerts, trailer mileage, tow/haul reminder, trailer electrical diagnostics and Trailer Tire Pressure Monitor System module (Includes trailer tire pressure monitoring alert when (PTT) trailer tire pressure monitor sensors are installed.)
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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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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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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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Following Distance Indicator (Included and only available with (PDI) Sierra HD Pro Safety.)
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Lane Departure Warning
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Seat Belt Adjustable Guide Loops, front row only
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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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Driver Restriction Features
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Tire Pressure Monitor
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Trailering Information Label provides max trailer ratings for tongue weight, conventional, gooseneck and 5th wheel trailering
No matches were found.
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Vehicle NameGMC Sierra 2500HD
-
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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Clutch Size (in)N/A
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Passenger Capacity5
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Front Head Room (in)43.03
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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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Curb Weight - Front (lbs)4023
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Curb Weight - Rear (lbs)2822
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Gross Vehicle Weight Rating Cap (lbs)11350
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Gross Combined Wt Rating (lbs)27500
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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)18500
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Wt Distributing Hitch - Max Tongue Wt. (lbs)1850
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Fifth Wheel Hitch - Max Trailer Wt. (lbs)19100
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Fifth Wheel Hitch - Max Tongue Wt. (lbs)4775
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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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Cold Cranking Amps @ 0° F (Primary)720
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Maximum Alternator Capacity (amps)220
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Maximum Alternator WattsN/A
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Suspension Type - FrontShort/Long Arm
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Suspension Type - RearMulti-Leaf Springs
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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)2.01
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Shock Absorber Diameter - Rear (mm)2.01
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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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Revolutions/Mile @ 45 mph - Front (Rev/Mile)N/A
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Revolutions/Mile @ 45 mph - Rear (Rev/Mile)N/A
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Revolutions/Mile @ 45 mph - Spare (Rev/Mile)N/A
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Front Wheel Size (in)20
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Rear Wheel Size (in)20
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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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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)159
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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)79.82
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Cab to Axle (in)42.17
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Ground Clearance, Front (in)10.12
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Ground Clearance, Rear (in)10.12
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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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