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2026 GMC Sierra 2500HD SLT
Vehicle Details
Body Style
Truck
Engine
6.6L 8Cyl
Exterior Colour
White
Interior Colour
Black
Transmission
Automatic
Drivetrain
4×4
Stock #
302195
Trim Details
Crew Cab Standard Box 4-Wheel Drive SLT
The 2026 GMC Sierra 2500HD SLT blends heavy-duty capability, premium comfort, and modern technology into a truck built for serious work and everyday refinement. Wrapped in Summit White with chrome accents and bold proportions, it delivers the power you need with the sophistication you want — ideal for towing, hauling, and travelling in style.Â
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Performance & CapabilityÂ
Engine: 6.6L Duramax Turbo-Diesel V8 delivering immense torque and dependable powerÂ
Transmission: Smooth 10-speed automatic tuned for heavy-duty workloadsÂ
Drivetrain: Autotrac 4-Wheel Drive with a two-speed transfer case for adaptable tractionÂ
Suspension: Standard Suspension Package with heavy-duty front springs for stability under loadÂ
Axle Ratio: 3.42 rear axle for balanced towing strength and efficiencyÂ
Trailering Equipment: Integrated trailer brake controller, Hitch Guidance with Hitch View, trailer tire pressure system, and in-vehicle trailering appÂ
Cooling & Durability: Heavy-duty air filter, engine oil cooler, transmission oil cooler, and diesel exhaust brake for controlled downhill towingÂ
Drive Modes: FlexRide mode system to optimize performance across varying conditionsÂ
Off-Road Readiness: Skid plates, automatic locking rear differential, and hill-descent capabilityÂ
Bed Utility: Spray-on bedliner, LED cargo lighting, and 120V bed-mounted outletÂ
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Winter & Weather ComfortÂ
Heated Front Seats for warmth during harsh temperaturesÂ
Heated Steering Wheel for comfort in winter drivingÂ
Remote Vehicle Start to pre-condition cabin climateÂ
Dual-Zone Automatic Climate Control with rear air vents for consistent comfortÂ
Reinforced Heating & Defroster System for enhanced cold-weather reliabilityÂ
Rain-Sensing Wipers for automatic visibility managementÂ
Engine Block Heater for dependable cold startsÂ
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Interior Comfort & ConvenienceÂ
Front 40/20/40 Bench Seats with power driver and power front passenger adjustÂ
Driver Memory Settings for seat and mirror preferencesÂ
Jet Black Interior with color-keyed carpeting and premium trimÂ
Enhanced Storage: Rear seat storage package and power sliding rear windowÂ
Connectivity: Wireless Apple CarPlay & Android Auto, USB ports including second-row charge ports, and 120V dash power outletÂ
Infotainment: 13.4" GMC Premium Infotainment touchscreen with Google Built-InÂ
Driver Display: 12" fully reconfigurable digital clusterÂ
Convenience Features: Keyless open, push-button start, cruise control, illuminated vanity mirrors, and auto-dimming rearview mirrorÂ
Audio System: 6-speaker sound system with SiriusXM capability and steering-wheel audio controlsÂ
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Safety & Driver AssistanceÂ
Sierra HD Pro Safety Package for elevated confidence on every driveÂ
Forward Collision Alert & Automatic Emergency Braking for added protectionÂ
Lane Departure Warning and Following Distance Indicator to support safe driving habitsÂ
Front Pedestrian Braking and Rear Seat Reminder for added situational awarenessÂ
HD Rear Vision Camera for improved visibility when maneuveringÂ
Tire Pressure Monitoring System including spare tire monitoringÂ
Teen Driver & Buckle-to-Drive for responsible driving reinforcementÂ
Theft-Deterrent System to help protect your investmentÂ
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Exterior Styling & UtilityÂ
Exterior Colour: Summit White — clean, bold, and timelessÂ
20" Bright-Face Aluminum Wheels with dark-painted pockets for a tough yet polished lookÂ
Chrome Exterior Accents: Chrome mirror caps, chrome bumpers, and chrome door handlesÂ
Lighting: Signature LED headlamps, LED fog lamps, IntelliBeam high beams, and LED bed lightingÂ
GMC MultiPro Tailgate with EZ Lift and power lock/release for unmatched versatilityÂ
6" Chrome Assist Steps for convenient access (dealer installed)Â
Rear Bumper CornerSteps for easy bed entryÂ
Black Recovery Hooks for added confidence on rugged terrainÂ
Active Aero Shutters for improved efficiencyÂ
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The 2026 GMC Sierra 2500HD SLT is built for those who demand real capability without sacrificing refinement. With diesel strength, innovative technology, and a comfortable, well-appointed interior, it’s a heavy-duty truck designed to conquer tough jobs while enhancing every mile of the journey.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
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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 Capacity6
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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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