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2026 GMC Sierra 2500HD Denali
Vehicle Details
Body Style
Truck
Engine
6.6L 8Cyl
Exterior Colour
Blue
Interior Colour
Black
Transmission
Automatic
Drivetrain
4×4
Stock #
302135
Trim Details
Crew Cab Standard Box 4-Wheel Drive Denali
The 2026 GMC Sierra 2500HD Denali combines uncompromising strength, premium craftsmanship, and advanced technology for drivers who demand maximum capability and refined luxury. With its bold stance, signature Denali styling, and professional-grade engineering, this heavy-duty truck delivers power and sophistication — perfect for work, adventure, and everything in between.Â
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Performance & CapabilityÂ
Engine: Duramax 6.6L V8 Turbo Diesel delivering impressive torque and towing confidence.Â
Transmission: Smooth-shifting 10-speed automatic transmission optimized for performance and efficiency.Â
Drivetrain: Autotrac 4-Wheel Drive with two-speed transfer case for superior traction in any terrain.Â
Suspension: Z71 Off-Road Suspension paired with heavy-duty leaf springs and shock absorbers for stability, load-bearing strength, and off-road readiness.Â
Axle Ratio: 3.42 rear axle optimized for towing, hauling, and highway efficiency.Â
Trailering Equipment: Integrated trailer brake controller, hitch guidance with Hitch View, Max Trailer Package with Gooseneck/5th Wheel prep, and in-vehicle trailering app for confident towing.Â
Drive Modes: Switchable FlexRide system with multiple drive modes to adapt to road, off-road, or towing conditions.Â
Off-Road Readiness: Skid plates, automatic locking rear differential, and hill descent control ensure capability in rugged conditions.Â
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Winter & Weather ComfortÂ
Heated & Ventilated Front Seats with available driver memory settings for tailored comfort.Â
Heated Second-Row Outboard Seats and Heated Steering Wheel for all-weather convenience.Â
Remote Start System to pre-condition the cabin in any season.Â
Dual-Zone Automatic Climate Control with humidity sensors for precise temperature management.Â
All-Weather Floor Liners for full interior protection year-round.Â
Engine Block Heater ensures reliable starts in cold climates.Â
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Interior Comfort & ConvenienceÂ
Front Bucket Seats with 10-way power adjustment, lumbar support, and memory settings.Â
Power Sliding Rear Window and rear storage package for utility and versatility.Â
Wireless Charging Pad and multiple USB/120V outlets for device connectivity.Â
Keyless Open & Push-Button Start for effortless access.Â
Wireless Apple CarPlay® & Android Autoâ„¢ for seamless smartphone integration.Â
13.4" GMC Premium Infotainment Touchscreen with Google Built-In and navigation.Â
12.3" Digital Driver Display offering customizable information at a glance.Â
Bose® Premium Audio System for immersive, concert-quality sound.Â
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Safety & Driver AssistanceÂ
GMC Pro Safety Plus Package for comprehensive driver confidence.Â
Forward Collision Alert with automatic emergency braking.Â
Lane Keep Assist with Lane Departure Warning and Front Pedestrian Braking.Â
Rear Cross Traffic Alert and Trailer Side Blind Zone Alert for added towing safety.Â
HD Surround Vision for a 360° view when parking or maneuvering.Â
Front & Rear Park Assist, Following Distance Indicator, and Rear Pedestrian Alert.Â
Teen Driver Mode and Buckle-to-Drive features for responsible driving.Â
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Exterior Styling & UtilityÂ
20" Machined Aluminum Wheels with LT275/65R-20 all-terrain tires for rugged style and capability.Â
Exterior Color: Downpour Metallic — bold, modern, and premium.Â
LED Lighting: Signature LED headlamps, LED fog lamps, LED cargo bed lighting, and roof marker lights for maximum visibility.Â
GMC MultiPro Tailgate: Configurable for loading, step access, or worksite functionality.Â
Spray-On Bedliner and 120V Bed-Mounted Outlet for durability and on-site power.Â
Chrome Assist Steps and Rear Bumper Corner Steps for easy cabin access.Â
Perimeter Lighting and Chrome Recovery Hooks for night and off-road confidence.Â
Denali Styling: Chrome mirror caps, chrome door handles, and refined grille design to signal premium craftsmanship.Â
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Whether hauling a heavy trailer, heading off-road, or commanding attention on city streets, the 2026 GMC Sierra 2500HD Denali Crew Cab delivers best-in-class power, unmatched comfort, and professional-grade capability. It’s the ultimate expression of strength, style, and sophistication — engineered for drivers who settle for nothing less than excellence.Â
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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Premium Sound System
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WiFi Hotspot
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Chrome 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, front, body-colour lower
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Bumper, rear body-colour with bumper CornerSteps
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Running Boards/Side Steps
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Bed Liner
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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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Wheelhouse liners, rear
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Mouldings, beltline, chrome
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Grille (Signature Chrome Denali grille.)
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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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Lamps, Smoked Amber roof marker, (LED)
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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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Mirror caps, chrome
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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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Integrated Tailgate Step
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Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light
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Tailgate and bed rail protection caps, top
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LPO, Polished exhaust tip (dealer-installed) (Requires (L8T) 6.6L V8 gas engine. Not included with (L5P) Duramax 6.6L Turbo-Diesel V8 engine.)
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Bucket Seats
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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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Cooled Front Seat(s)
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Heated Rear Seat(s)
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Mirror Memory
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Seat Memory
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Centre Console, floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capability
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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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Rear Defrost
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Sliding Rear Window
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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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Adaptive Cruise Control
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Cruise Control
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Universal Garage Door Opener
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Wireless Charging
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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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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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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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Hill Descent Control
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Transfer case, two-speed active, electronic Autotrac with push button control
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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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Skid Plates protect the oil pan, front axle and transfer case
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Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
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Suspension, Off-Road includes twin-tube shocks
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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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X31 Off-Road Package includes (JHD) Hill Descent Control, (NZZ) skid plates, Off-Road suspension and Twin-tube Rancho shocks
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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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Rear Parking Aid
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Aerial View Display System
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Back-Up Camera
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Bed View Camera, camera in the CHMSL to show a view of the cargo bed display located in infotainment screen, includes Two Trailer Camera Provisions
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Trailer Camera Provisions and trailer viewing software
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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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Cross-Traffic Alert
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Blind Spot Monitor
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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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Safety Alert Seat
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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 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)11750
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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)17600
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Fifth Wheel Hitch - Max Tongue Wt. (lbs)4400
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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)10.28
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Ground Clearance, Rear (in)10.28
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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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