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2024 GMC Sierra 3500HD Denali Ultimate
Vehicle Details
Body Style
Truck
Engine
6.6L 8Cyl
Exterior Colour
White
Transmission
Automatic
Drivetrain
4×4
Stock #
T21414
Trim Details
4WD Crew Cab Standard Box Denali Ultimate
Top-tier power meets luxury in this 2024 GMC Sierra 3500HD Denali Ultimate—loaded with premium features, a crew cab, and a 6.6L Duramax Diesel engine paired with a 10-speed automatic transmission. It’s a heavy-duty workhorse built to tow, haul, and dominate—while offering the comfort of a first-class cabin.
With just 19,625 km and 4x4 capability, this Denali Ultimate is built for both serious job sites and weekend adventures. From adaptive ride control to refined interior finishes, it’s the ultimate blend of performance and prestige.
Compare with Similar Heavy-Duty Trucks
YearMakeModelTrimEngineOdometer2024GMCSierra 3500HDDenali Ultimate6.6L Diesel19,625 km2023FordF-350 PlatinumPlatinum6.7L PowerStroke24,000 km2023ChevroletSilverado 3500HDHigh Country6.6L Duramax21,000 km2022RAM3500 LimitedLimited6.7L Cummins29,500 kmFrequently Asked Questions
What makes the Denali Ultimate different? The Denali Ultimate is the highest trim level, featuring a premium Alpine Umber interior, 16-way massaging front seats, a 13.4" touchscreen, 12-speaker Bose system, and more. Can this truck handle serious towing? Absolutely—powered by a 6.6L Duramax Diesel engine and built on a high-strength chassis, this Sierra 3500HD can handle major fifth-wheel, gooseneck, and conventional towing with ease. Is this a dually (dual rear wheel)? No, this model is a SRW (Single Rear Wheel) configuration—easier to park and more manageable for daily use. Is it equipped with GMC's MultiPro Tailgate? Yes, the Denali Ultimate includes the six-function MultiPro tailgate for maximum utility and access. What’s the interior like? Think luxury SUV in a truck—premium leather, real wood accents, head-up display, and segment-leading infotainment all come standard.
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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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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Generic Sun/Moonroof
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Sun/Moonroof
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Bumper, front, body-colour lower
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Bumper, rear body-colour with bumper CornerSteps
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CornerStep, rear bumper
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Bed Step, Black integrated on forward portion of bed on driver and passenger side
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Power Retractable Running Boards
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Running Boards/Side Steps
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Mouldings, beltline, stainless steel
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Wheelhouse liners, rear (Not available with dual rear wheel models.)
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Bed Liner
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Cargo tie downs (12), fixed, rated at 500 lbs (226.8 kg) per corner
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Grille, Signature Denali in Vader chrome
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Winter Grille Cover
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Daytime Running Lights
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LED Headlights
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Automatic Highbeams
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Fog Lamps
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Taillamps, Animated LED Signature Tail, Stop, turn and Reverse 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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Lamps, Smoked Amber roof marker, (LED) (Standard with dual rear wheels.)
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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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Intermittent Wipers
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Rain Sensing Wipers
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Variable Speed Intermittent Wipers
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Privacy Glass
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Rear Defrost
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Sliding Rear Window
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Door handles, chrome
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Integrated Tailgate Step
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Tailgate and bed rail protection caps, top
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Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light
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Premium Sound System
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Bucket Seats
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Leather Seats
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Driver Adjustable Lumbar
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Power Driver Seat
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Seat-Massage
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Passenger Adjustable Lumbar
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Power Passenger Seat
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Pass-Through Rear Seat
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Rear Bench 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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Leather Steering Wheel
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Heated Steering Wheel
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Adjustable Steering Wheel
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Steering Wheel Audio Controls
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GMC Premium information Display- 13.4" diagonal Multicolour touch screen
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Driver Information Centre, enhanced, 12.3" diagonal reconfigurable multicolour digital display
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Heads-Up Display
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Exterior Temperature Display located in radio display
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Compass, located in instrument cluster
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Tire Pressure Monitor
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Window, power front, drivers express up/down
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Power Windows
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Power Door Locks
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Remote Engine Start
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Keyless Entry
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Keyless 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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Security System
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Wireless Charging
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Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
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USB ports, (2) charge-only, rear
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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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A/C
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Climate Control
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Multi-Zone A/C
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Air vents, rear
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Rear Defrost
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Auto-Dimming Rearview Mirror
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Back-Up Camera
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Assist handles, front A-pillar mounted for driver and passenger, rear B-pillar mounted
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GMC Connected Access capable (Included and only available with (UE1) OnStar. Subject to terms. See onstar.ca or dealer for details.)
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8 Cylinder Engine
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Diesel Fuel
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Turbocharged
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10-Speed A/T
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A/T
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Rear axle, 3.42 ratio
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Pickup bed
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GVWR, 12,100 lbs. (5488 kg) with single rear wheels (Included and only available with TK30743 model and (L5P) Duramax 6.6L Turbo-Diesel V8 engine. Requires single rear wheels.)
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Engine block heater
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Keyless Start
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Air filtration monitoring
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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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Battery, heavy-duty 730 cold-cranking amps/70 Amp-hr maintenance-free with rundown protection and retained accessory power (Included and only available with (L5P) Duramax 6.6L Turbo-Diesel V8 engine.)
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Alternator, 220 amps
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Trailer brake controller, integrated
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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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Skid Plates protect the oil pan, front axle and transfer case
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Suspension, Off-Road includes twin-tube shocks (Not available with dual rear wheels.)
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Power Steering
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4-Wheel Disc Brakes
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ABS
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Exhaust Brake
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Brake lining wear indicator
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Capped Fuel Fill
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Back-Up Camera
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Heads-Up Display
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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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X31 Off-Road Package includes (JHD) Hill Descent Control, (NZZ) skid plates, Off-Road suspension and Twin-tube Rancho shocks (Not available with dual rear wheels.)
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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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Trailering Information Label provides max trailer ratings for tongue weight, conventional, gooseneck and 5th wheel trailering
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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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Hill Descent Control (Not available with dual rear wheels.)
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Daytime Running Lights
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LED Signature DRLs
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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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Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching
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Trailer Camera Provisions and trailer viewing software
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Cross-Traffic Alert
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Blind Spot Monitor
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Lane Departure Warning
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Following Distance Indicator (Included and only available with (PDI) Sierra HD Pro Safety.)
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Safety Alert Seat
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Rear Seat Reminder
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Driver Restriction Features
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Seat Belt Adjustable Guide Loops, front row only
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Indicator-Seat Belt WARNING, Rear Seat (Requires Crew Cab or Double Cab model.)
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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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Tire Pressure Monitor
No matches were found.
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Vehicle NameGMC Sierra 3500HD
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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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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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Gross Axle Wt Rating - Front (lbs)4800
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Gross Axle Wt Rating - Rear (lbs)7250
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Curb Weight - Front (lbs)4041
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Curb Weight - Rear (lbs)2938
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Gross Vehicle Weight Rating Cap (lbs)12100
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Gross Combined Wt Rating (lbs)24000
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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)20000
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Wt Distributing Hitch - Max Tongue Wt. (lbs)2000
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Fifth Wheel Hitch - Max Trailer Wt. (lbs)21100
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Fifth Wheel Hitch - Max Tongue Wt. (lbs)5275
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Maximum Trailering Capacity (lbs)20000
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Engine Order CodeL8T
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Engine TypeGas 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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Engine Oil CoolerYes
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Cold Cranking Amps @ 0° F (Primary)720
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Maximum Alternator Capacity (amps)170
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Frame TypeHydroformed
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Suspension Type - FrontShort/Long Arm w/Torsion Bars
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Suspension Type - Rear3-Stage Multi-Leaf
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Axle Type - FrontIndependent
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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)51
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Shock Absorber Diameter - Rear (mm)51
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Stabilizer Bar Diameter - Front (in)1.38
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Front Tire Order CodeQF6
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Rear Tire Order CodeQF6
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Spare Tire Order CodeZYG
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Front Tire SizeLT275/70R18
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Rear Tire SizeLT275/70R18
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Spare Tire SizeLT275/70R18
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Front Wheel Size (in)18 x 8
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Rear Wheel Size (in)18 x 8
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Spare Wheel Size (in)18 x 8
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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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Steering Ratio (:1), At LockN/A
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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)158.94
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Length, Overall (in)250.08
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Width, Max w/o mirrors (in)81.85
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Height, Overall (in)81.2
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Cab to Axle (in)42.1
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Ground Clearance, Front (in)11.18
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Ground Clearance, Rear (in)11.18
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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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