The 2024 GMC Sierra 2500HD AT4 is built for those who demand uncompromising heavy-duty capability without sacrificing premium comfort or advanced technology. Powered by the legendary Duramax diesel engine and equipped with AT4-exclusive off-road enhancements, this Crew Cab pickup is ready to conquer demanding job sites, weekend adventures, and everything in between. 

Performance & Capability 

Engine: 6.6L Duramax V8 Turbo Diesel delivering exceptional torque and towing capability 

Transmission: Allison 10-speed automatic transmission for smooth, confident performance 

Drivetrain: Autotrac Two-Speed 4WD transfer case for superior traction on any terrain 

Rear Axle: 3.42 rear axle ratio optimized for towing and heavy-duty performance 

Off-Road Suspension: AT4-tuned suspension with skid plates and hill descent control 

Rear Differential: Automatic locking rear differential for enhanced off-road confidence 

Trailering Equipment: Integrated trailer brake controller, Hitch Guidance, Hitch View, and advanced trailering technology 

Gooseneck/5th Wheel Prep Package: Factory-installed bed provisions with integrated trailer wiring 

Exhaust Brake: Integrated diesel exhaust brake for improved downhill control while towing 

Drive Modes: Selectable terrain modes to optimize performance in changing conditions 

 

Winter & Weather Comfort 

Heated & Ventilated Front Seats for year-round comfort 

Heated Rear Outboard Seats for second-row passengers 

Heated Steering Wheel for cold-weather driving 

Remote Start System for added convenience 

Dual-Zone Automatic Climate Control with rear air vents 

Engine Block Heater for dependable cold-weather starts 

Rain-Sensing Windshield Wipers for improved visibility 

Premium All-Weather Floor Liners with removable carpet inserts 

 

Interior Comfort & Technology 

Premium Front Bucket Seats with power adjustment 

Driver Memory Settings for seat and mirror positions 

Power Sliding Rear Window for added ventilation 

Power Sunroof for an open-air driving experience 

Rear Seat Storage Package for added interior versatility 

Wireless Charging Pad for compatible devices 

Multiple USB ports throughout the cabin plus 120V power outlets 

Keyless Open & Push-Button Start for effortless convenience 

Wireless Apple CarPlay & Android Auto compatibility 

13.4-inch GMC Premium Infotainment System with Google Built-In and Navigation 

12-inch Digital Driver Information Display with customizable vehicle information 

15-inch Head-Up Display projecting key driving information onto the windshield 

Bose Premium Audio System delivering rich, immersive sound 

Rear Camera Mirror providing an expanded rearward view 

 

Safety & Driver Assistance 

GMC Pro Safety featuring Forward Collision Alert and Automatic Emergency Braking 

Adaptive Cruise Control for effortless highway driving 

Lane Departure Warning  

Front Pedestrian Braking 

HD Surround Vision with Bed View Camera 

Front & Rear Park Assist 

Trailer Side Blind Zone Alert 

Rear Cross Traffic Alert 

Following Distance Indicator 

Driver Safety Alert Seat 

Teen Driver Mode and Buckle-to-Drive technology 

Tire Pressure Monitoring System 



Exterior Styling & Utility 

20-inch Black Aluminum Wheels wrapped in aggressive All-Terrain tires 

Exterior Colour: Thunderstorm Grey Metallic bold, modern, and distinctly rugged 

Signature LED Headlamps, LED Fog Lamps, and LED Roof Marker Lamps 

LED Cargo Bed Lighting for improved visibility after dark 

GMC MultiPro Tailgate with EZ Lift power lock and release 

Spray-On Bedliner for lasting cargo protection 

120V Bed-Mounted Power Outlet for added worksite convenience 

Heated Power Trailering Mirrors with integrated task lighting 

Off-Road High Clearance Steps for easier entry and improved trail capability 

Red Front Recovery Hooks and AT4-exclusive exterior styling 

Rear Bumper CornerSteps for convenient bed access 

 

Whether youre hauling heavy equipment, towing a fifth-wheel trailer, or exploring off the beaten path, the 2024 GMC Sierra 2500HD AT4 delivers exceptional diesel power, premium refinement, and advanced technology, making it one of the most capable and luxurious heavy-duty trucks on the road. 

 



AMVIC Licensed Dealer

*Every reasonable effort is made to ensure the accuracy of the information shown. The Standard Equipment listed is provided at the time of the manufacture and may not match the exact vehicle displayed. Please confirm with a sales representative the accuracy of this information.

Safety EquipmentAirbags, Dual-stage frontal airbags for driver and front outboard passenger; Seat-mounted side-impact airbags for driver and front outboard passenger; Head-curtain airbags for front and rear outboard seating positions; Includes front outboard Passenger Sensing System for frontal outboard passenger airbagFront and Rear Park Assist, ultrasonicRear Cross Traffic AlertTeen Driver a configurable feature that lets you activate customizable vehicle settings associated with a key fob, to help encourage safe driving behaviour. It can limit certain available vehicle features, and it prevents certain safety systems from being turned off. An in-vehicle report card gives you information on driving habits and helps you to continue to coach your new driverStabiliTrak, stability control system with Proactive Roll Avoidance and traction control, includes electronic trailer sway control and hill start assistDaytime Running Lamps, LED signature lightingHitch Guidance dynamic single line to aid in truck trailer alignment for hitchingRear Seat Belt IndicatorTire Pressure Monitoring System, auto learn includes Tire Fill Alert (does not apply to spare tire)Safety Alert SeatTrailer Side Blind Zone AlertHitch Guidance with Hitch View with image adjustment, Pan/Zoom/TiltFront Pedestrian Braking (Included and only available with (PDI) Sierra HD Pro Safety.)Automatic Emergency Braking (Included and only available with (PDI) Sierra HD Pro Safety.)LED Signature DRL'sOnStar and GMC Connected Services capable (Terms and limitations apply. See onstar.ca or dealer for details.)HD Surround Vision provides the driver with an overhead view of the scene around the vehicle on a centre stack display. Includes front camera washer.Bed View Camera, camera in the CHMSL to show a view of the cargo bed display located in infotainment screen, includes Two Trailer Camera ProvisionsTrailer Camera Provisions and trailer viewing softwareForward Collision Alert (Included and only available with (PDI) Sierra HD Pro Safety.)Following Distance Indicator (Included and only available with (PDI) Sierra HD Pro Safety.)Lane Departure Warning (Included and only available with (PDI) Sierra HD Pro Safety.)Seat Belt Adjustable Guide Loops, front row onlyBuckle 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.)Trailering Information Label provides max trailer ratings for tongue weight, conventional, gooseneck and 5th wheel trailering3 Years of OnStar Remote Access. The OnStar Remote Access Plan gives you simplified remote control of your properly equipped vehicle and unlocks a variety of great features in your myGMC mobile app. See dealer for details. (Does not include emergency or security services. 3 years begins from the date of vehicle delivery. Requires a working vehicle electrical system (including battery), wireless reception and device data connection. See onstar.ca for details and limitations. Features and functionality vary by vehicle. Available on select Apple and Android devices. Device data connection required. Non-refundable and no cash value.)Interior EquipmentSeat adjuster, driver 10-way power including lumbarSeat adjuster, passenger 10-way power including lumbarSeating, heated driver and front outboard passengerSeats, ventilated driver and front passengerSeats, heated second row outboard seatsCentre Console, floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capabilityFloor covering, colour-keyed carpetingSteering wheel, heatedSteering wheel audio controlsCompass, located in instrument clusterWindow, power front, passenger express up/downWindows, power rear, express downDoor locks, powerRemote vehicle starter systemTheft-deterrent system, unauthorized entryPower outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)Defogger, rear-window electricMirror, inside rearview auto-dimmingAssist handles front A-pillar mounted for driver and passenger, rear B-pillar mountedAir conditioning, dual-zone automatic climate controlCruise control, steering wheel-mountedExterior Temperature Display, located in radio displaySteering column, manual Tilt-Wheel and telescopingRear Seat ReminderSteering wheel, wrappedGMC Connected Access capable (Subject to terms. See onstar.ca or dealer for details.)Wireless ChargingUSB Ports, 2 (first row) located on consoleAir vents, rearDriver Information Centre, enhanced, 12.3" diagonal reconfigurable multicolour digital displayWindows, power front, drivers express up/downDriver memory recalls driver "presets" for power driver seat and outside mirrorsUSB Ports, 2, Charge/Data ports located inside centre consoleSeats, front bucket with centre consoleSeat trim, Perforated front LeatherSeat, Up-level Rear with Storage Package 60/40 folding bench for Crew Cab models, includes full-length bench seat, seatback storage on left and right side, centre fold out armrest with 2 cupholders, full cab width under-seat storage, (includes child seat top tether anchor)Premium Floor Liners with removable carpet insert, frontPremium Floor Liners with removable carpet insert, rearGMC Premium information Display- 13.4" diagonal Multicolour touch screenKeyless Open and Start includes remote keyless entryUSB ports, (2) charge-only, rearExterior EquipmentTires, LT275/65R20 all-terrain, blackwallTire carrier lock keyed cylinder lock that utilizes same key as ignition and doorCornerStep, rear bumperCargo tie downs (12), fixed, rated at 500 lbs (226.8 kg) per cornerLamps, cargo area cab mounted integrated with centre high mount stop lamp, with switch in bank on left side of steering wheelGlass, deep-tintedTailgate and bed rail protection caps, topDoor handles, body-colourMouldings, beltline, BlackMirror caps, high gloss BlackWheelhouse liners, rearWipers, front rain-sensingFog lamps, LEDBed Step, Black integrated on forward portion of bed on driver and passenger sideWheels, 20" (50.8 cm) High Gloss black aluminum wheels 8 spokesTire, spare LT275/70R18 all-terrain, blackwallCapless Fuel Fill (Requires (L8T) 6.6L gas V8 engine.)Bumper, front, body-colour lowerBumper, rear body-colour with bumper CornerStepsBedliner, Spray-on, Pickup bedliner with GMC logo (does not include spray-on liner on tailgate due to Black composite inner panel) (AT4 logo replaces GMC logo.)Grille (Gloss Black header and grille insert bars with Black Chrome accents.)Headlamps, Animated LED projectors LED turn signals and Daytime Running LampsIntelliBeam, automatic high beam on/off (Included and only available with (PDI) Sierra HD Pro Safety.)LED Cargo Area Lighting located in cargo bed activated with switch on centre switch bank or key fobTaillamps, Animated LED Signature Tail, Stop, turn and Reverse lampsMirrors, outside power-adjustable vertical trailering with heated and auto-dimming upper glass, (driver and passenger), lower convex mirrors, turn signal indicators, puddle lamps, (U12) perimeter lighting, auxiliary lighting, power folding/extending (extends 3.31" [84.25mm]) lightingTailgate, GMC MultiPro Tailgate with six functional load/access features NOTE: Auto release can be disabled if ball hitch is installed. See Owner's manual for detailsTailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area lightEntertainment EquipmentBose Sound System, premium 7-speaker system with Richbass wooferBluetooth for phone connectivity to vehicle infotainment systemWi-Fi Hotspot capable (Terms and limitations apply. See onstar.ca or dealer for details.)Wireless phone projection for Apple CarPlay and Android AutoSiriusXM with 360L includes a trial subscription to the Platinum Plan. Experience more channels in the vehicle, a more personalized experience and easier navigation. (Certain features and/or content may not be available unless an active data connection is enabled in the vehicle. Content varies by SiriusXM subscription plan. Features and display may vary by vehicle. All SiriusXM services require a subscription, sold separately by SiriusXM after the trial period. Your SiriusXM service will automatically stop at the end of your trial unless you decide to subscribe. If you decide to continue service after your trial, the subscription plan you choose will continue for an indeterminate term and you will be charged according to your chosen payment method at the then-current rates unless and until you cancel. Taxes apply. Please see the SiriusXM Customer Agreement at siriusxm.ca/terms for complete terms and how to cancel, which includes calling SiriusXM at 1-888-539-7474. All rates, content, and programming are subject to change. SiriusXM uses personal information in accordance with SiriusXM Privacy Policy, available at siriusxm.ca/privacy. SiriusXM Canada Inc. "SiriusXM", the SiriusXM logo, channel names and logos are trademarks of Sirius XM Radio Inc. and are used under license.)Audio System, 13.4" diagonal Premium GMC Infotainment System with Google built in apps such as navigation and voice assistance includes colour touch-screen, multi-touch display, AM/FM stereo, Bluetooth streaming audio for music and most phones; featuring wireless Android Auto and Apple CarPlay capability for compatible phonesSiriusXM enjoy a Platinum Plan trial subscriptionMechanical EquipmentEngine, 6.6L V8 with Direct Injection and Variable Valve Timing, gasoline (401 hp [299 kW] @ 5200 rpm, 464 lb-ft of torque [629 N-m] @ 4000 rpm)Air filtration monitoringFour wheel driveCooling, external engine oil coolerCooling, auxiliary external transmission oil coolerBattery, heavy-duty 720 cold-cranking amps/80 Amp-hr maintenance-free with rundown protection and retained accessory power (Included and only available with (L8T) 6.6L V8 gas engine.)Alternator, 170 amps (Requires (L8T) 6.6L V8 gas engine.)Trailer brake controller, integratedFrame, fully-boxed, hydroformed front section and a fully-boxed stamped rear sectionSteering, Digital Variable Steering Assist this system automatically adjusts steering based on speed, road conditions, and other inputs to reduce driver effort and fatigueBrakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotorsBrake lining wear indicatorRear axle, 3.73 ratio (Requires (L8T) 6.6L V8 gas engine.)Pickup bed includes bed assist stepPush Button StartAir filter, heavy-dutyAuto-locking rear differentialHill Descent ControlRecovery hooks, RedTransmission, Allison 10-Speed automaticTransfer case, two-speed active, electronic Autotrac with push button controlIn-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.)Skid Plates protect the oil pan, front axle and transfer caseSuspension, Off-Road includes twin-tube shocksGVWR, 10,850 lbs. (4921 kg) (Included and only available with TK20743 model and (L8T) 6.6L V8 gas engine with 18" or 20" wheels.)Other EquipmentTrailering Package includes trailer hitch, 7-pin and 4-pin connectors and (CTT) Hitch GuidanceX31 Off-Road Package includes (JHD) Hill Descent Control, (NZZ) skid plates, Off-Road suspension and Twin-tube Rancho shocksSierra HD Pro Safety includes (UEU) Forward Collision Alert, (UE4) Following Distance Indicator, (UKJ) Front Pedestrian Braking, (TQ5) IntelliBeam, (UFL) Lane Departure Warning, (T8Z) Buckle to Drive and (UHY) Automatic Emergency BrakingProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (UET) In-vehicle Trailering App