The 2026 GMC Sierra 1500 AT4 brings together commanding V8 performance, serious off-road capability, and premium everyday comfort. Finished in bold Onyx Black and equipped with rugged AT4 hardware, advanced trailering technology, and an upscale cabin, this full-size pickup is built to handle demanding terrain without sacrificing refinement.  

 

Performance & Capability  

Engine: 6.2L EcoTec3 V8 delivers strong, responsive performance with the muscle needed for towing, hauling, and confident acceleration  

Transmission: 10-speed automatic with Electronic Precision Shift provides smooth, well-controlled gear changes  

Drivetrain: Four-wheel drive with an AutoTrac two-speed transfer case for confident traction across changing conditions  

Rear Axle: 3.23 rear axle ratio balances responsive performance with towing capability  

Rear Differential: Automatic locking rear differential helps maintain traction when terrain gets loose or challenging  

Off-Road Suspension: AT4 off-road suspension package provides a rugged foundation for backroads, trails, and uneven terrain  

Hill Descent Control: Helps maintain controlled speed on steep downhill sections  

Skid Plates: Added underbody protection for greater confidence when navigating rough terrain  

Drive Modes: FlexRide mode selection allows the truck to adapt its driving characteristics to changing road and trail conditions  

Trailering: Integrated trailer brake controller, Hitch Guidance with Hitch View, trailer camera provisions, and Trailering App provide enhanced towing control and visibility  

 

Winter & Weather Comfort  

Heated Front Seats: Adds warmth for the driver and front passenger during cold-weather drives  

Heated Rear Outboard Seats: Keeps rear passengers comfortable through the winter months  

Heated Steering Wheel: Provides welcome warmth on frosty mornings  

Engine Block Heater: Helps support dependable cold-weather starting  

Remote Vehicle Start: Prepares the cabin before you set out  

Dual-Zone Automatic Climate Control: Allows individualized temperature settings for driver and front passenger  

Rain-Sensing Wipers: Automatically respond to changing precipitation for added convenience  

Premium Floor Liners: Help protect the interior from snow, mud, water, and everyday debris  

 

Interior Comfort & Convenience  

Power Front Seats: Power-adjustable driver and passenger seating with memory functionality for personalized comfort  

Ventilated Front Seats: Adds cooling comfort during warmer weather  

Power Sliding Rear Window: Provides convenient ventilation and an open-air feel when desired  

Power Tilt & Telescoping Steering Column: Makes it easy to find a comfortable driving position  

Keyless Open & Push-Button Start: Simplifies entry and ignition  

Wireless Charging: Conveniently powers compatible smartphones without the need for charging cables  

13.4 GMC Premium Infotainment System: Large colour touchscreen with Google Built-In compatibility, navigation capability, and Bluetooth connectivity  

12 Reconfigurable Digital Driver Display: Keeps important vehicle information clearly presented and customizable  

Bose Premium Audio: Delivers rich, immersive sound throughout the cabin  

Wireless Phone Projection: Keeps compatible smartphones seamlessly connected  

Universal Home Remote: Conveniently operates compatible garage doors and home systems  

Rear Seat Storage Package: Adds practical storage for passengers, equipment, and everyday essentials  

120V Power Outlets: Provides convenient power access in the cabin and cargo bed  

 

Technology & Visibility  

15 Multicolour Head-Up Display: Projects important driving information directly into the drivers field of view  

Rear Camera Mirror: Enhances rearward visibility for greater awareness around the truck  

Bed View Camera: Helps monitor cargo and equipment in the pickup bed  

HD Surround Vision: Provides an enhanced view around the truck when parking or maneuvering  

LED Cargo Bed Lighting: Illuminates the bed for easier loading and unloading after dark  

 

Safety & Driver Assistance  

GMC Pro Safety: A suite of advanced technologies designed to provide additional driver awareness  

Forward Collision Alert & Automatic Emergency Braking: Helps identify potential frontal collisions and assists with emergency braking  

Lane Keep Assist with Lane Departure Warning: Helps encourage the truck to remain within its lane  

Adaptive Cruise Control: Helps maintain a selected following distance from traffic ahead  

Front Pedestrian Braking: Adds awareness when pedestrians are detected ahead  

Rear Pedestrian Alert & Rear Cross Traffic Braking: Provides added confidence while reversing  

Trailer Side Blind Zone Alert: Helps monitor areas alongside the truck and trailer  

Front & Rear Park Assist: Makes maneuvering in tight spaces easier  

Safety Alert Seat: Provides directional seat feedback for certain detected hazards  

Teen Driver Mode & Buckle-to-Drive: Adds additional safety-focused features for newer drivers and occupants  

 

Exterior Styling & Utility  

Exterior Colour: Onyx Black a deep, commanding finish that emphasizes the AT4s rugged personality  

20 Machined Aluminum Wheels: Finished with Carbon Grey Metallic accents for a bold, upscale appearance  

275/60R20 All-Terrain Tires: Designed to provide confident grip across pavement, gravel, dirt, and trail surfaces  

AT4 Styling: Aggressive design cues and functional off-road equipment give the Sierra a distinctive presence  

Red Front Recovery Hooks: A signature AT4 detail ready for demanding terrain while adding striking visual contrast  

Off-Road High-Clearance Steps: Provide easier cabin access while complementing the trucks rugged stance  

GMC MultiPro Tailgate: Versatile multi-function design makes loading, unloading, and accessing the cargo bed easier  

Power Lock & Release Tailgate: Adds convenient powered tailgate operation  

Spray-On Bedliner: Provides durable protection for the pickup box  

120V Bed-Mounted Outlet: Brings practical power to the jobsite, campsite, or wherever the truck takes you  

Front & Rear Bumper Corner Steps: Provide convenient access to the cargo area  

 

Whether youre towing a trailer, navigating winter roads, working around town, or heading deep into the backcountry, the 2026 GMC Sierra 1500 AT4 is built to meet the moment. With its powerful 6.2L V8, four-wheel-drive capability, premium technology, and unmistakable AT4 character, it delivers the ideal combination of rugged strength, sophisticated comfort, and off-road confidence. 

 



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, ultrasonicHitch GuidanceRear Seat ReminderStabiliTrak, stability control system with Proactive Roll Avoidance and traction control, includes electronic trailer sway control and hill start assistDaytime Running Lamps, LED signature lightingRear Seat Belt IndicatorTire Pressure Monitoring System, auto learn includes Tire Fill Alert (does not apply to spare tire)Rear Cross Traffic BrakingRear Pedestrian AlertTrailer Side Blind Zone AlertHD Surround Vision provides the driver with an overhead view of the scene around the vehicle on a centre stack display. Includes front camera washer.Trailer Camera Provisions and trailer viewing softwareSeat Belt Adjustable Guide Loops, front row onlyAutomatic Emergency Braking (Included and only available with (PDI) GMC Pro Safety.)Front Pedestrian Braking (Included and only available with (PDI) GMC Pro Safety.)Following Distance Indicator (Included and only available with (PDI) GMC Pro Safety.)Forward Collision Alert (Included and only available with (PDI) GMC Pro Safety.)Lane Keep Assist with Lane Departure Warning (Included and only available with (PDI) GMC Pro Safety.)Safety Alert Seat (Included and only available with (PDI) GMC Pro Safety.)Hitch View with image adjustment, Pan/Zoom/TiltOnStar Services capable (See onstar.ca for details and limitations. Services vary by model. Service plan required.)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) GMC Pro Safety.)OnStar Basics (OnStar Fleet Basics for Fleet) Drive more confidently with up to 8 years of core OnStar services including mobile app commands, connectivity for select apps that provide in-vehicle voice assistance and navigation with real-time traffic, and Automatic Crash Response. (Requires (UE1) OnStar. Term begins on vehicle delivery date. Paid subscription required after expiry. Services are dependent on compatible wireless networks provided by third-party wireless service providers, working vehicle electrical systems, GPS signal and other factors outside GM control. Changes in technology and wireless networks may limit or prevent the operation of certain services. Services, connectivity, and capabilities have additional terms and limitations and are subject to change, and will vary by model, vehicle configuration, software version, conditions, and geographical and technical restrictions. Compatible smartphone required for mobile app commands. Not all vehicles may transmit all crash data; OnStar links to emergency services; Voice and Maps apps are subject to change at any time and may be provided by third parties. Non-refundable and no cash value. See onstar.ca/en/info for terms and details.)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, heatedCompass, located in instrument clusterWindow, power front, passenger express up/downWindows, power rear, express downDoor locks, powerRemote vehicle starter systemTheft-deterrent system, unauthorized entryDefogger, 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 controlExterior Temperature Display, located in radio displayPower outlet, interior power outlet, 120-volt (400 watts shared with (KC9) bed mounted power outlet)Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) interior power outlet)Adaptive Cruise ControlSteering wheel, wrappedWireless ChargingUSB Ports, 2 (first row) located on consoleAir vents, rearDriver Information Centre, enhanced, 12.3" diagonal reconfigurable multicolour digital displayBrake lining wear indicatorWindows, 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 consoleSteering column lock, electricalSeats, front bucket with centre consolePremium Floor Liners with removable carpet insert, frontPremium Floor Liners with removable carpet insert, rearKeyless Open and Start includes remote keyless entryUSB ports, (2) charge-only, rearGMC Premium information Display-13.4" diagonal Multicolour I touch screenSeat, 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)Steering column, power rake and telescopingIn-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 moduleSeat trim, Perforated leather frontExterior EquipmentTire carrier lock keyed cylinder lock that utilizes same key as ignition and doorCornerStep, rear bumperGlass, deep-tintedTailgate and bed rail protection caps, topDoor handles, body-colourLamps, cargo area, cab mounted integrated with centre high mount stop lamp, with switch in bank on left side of steering wheelWheel, 17" x 8" (43.2 cm x 20.3 cm) full-size, steel spareMirror caps, high gloss BlackLighting, perimeterMirrors, outside heated power-adjustable, power-folding and driver-side auto-dimming puddle lamps, side perimeter lighting and memoryWipers, front rain-sensingFog lamps, LEDTailgate, GMC MultiPro Tailgate with six functional load/access featuresBumper, rear body-colour with corner stepsBumper, front, body-colour lowerLED Cargo Area Lighting located in cargo bed activated with switch on centre switch bank or key fobTailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area lightHeadlamps, LED projectors with Fade-on/Fade-off animation, LED turn signals and Daytime Running LampsIntelliBeam, automatic high beam on/off (Included and only available with (PDI) GMC Pro Safety.)Taillamps, LED LED signature taillight with LED stop, turn & reverse and Fade-on/Fade-off animationWheelhouse liners, rear (Deleted with (PCP) AT4 CarbonPro Edition.)Grille (Black chrome header and grille insert bars with gloss black accents.)Wheels, 20" x 9" (50.8 cm x 22.9 cm) machined aluminum with Carbon Grey Metallic accentsTires, 275/60R20SL all-terrain, blackwall (Includes (QAQ) spare tire.)Tire, spare 255/80R17SL all-season, blackwall (Included and only available with 20" or 22" wheels and tires excluding (QFV) LT265/60R20 MT blackwall Goodyear Wrangler Territory tires.)Bedliner, Spray-on Pickup bedliner with GMC logo (does not include spray-on liner on tailgate due to Black composite inner panel) (Deleted with (PCP) AT4 CarbonPro Edition.)Entertainment 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.)SiriusXMSteering wheel audio controlsAudio 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 phonesWireless, Apple CarPlay / Wireless Android AutoSiriusXM with 360L Trial Subscription. SiriusXM with 360L transforms your customers' ride with our most extensive and personalized radio experience on the road. (IMPORTANT: The SiriusXM trial subscription is not provided on vehicles that are ordered for Fleet Daily Rental ("FDR") use. 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.)Mechanical EquipmentFour wheel driveTrailer brake controller, integratedBrakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotorsFrame, fully-boxed, hydroformed front sectionExhaust, aluminized stainless-steel muffler and tailpipePush Button StartAir filter, heavy-dutyAuto-locking rear differentialAutomatic Stop/StartHill Descent ControlSkid PlatesSteering, Electric Power Steering (EPS) assist, rack-and-pinionCapless Fuel FillRear axle, 3.23 ratioAlternator, 220 ampsPickup bedTransfer case, two-speed, electronic Autotrac with push button control (4WD models only)Suspension, Off-Road with 2" factory installed lift and monotube shocksRecovery hooks, RedCargo tie downs (12), fixed, rated at 500 lbs per cornerElectronic Precision Shift and steering column paddle shiftersEngine, Duramax 3.0L Turbo-Diesel I6 (305 hp [227 kW] @ 3750 rpm, 495 lb-ft of torque [671 Nm] @ 2750 rpm) (Includes (KW5) 220-amp alternator and (K05) engine block heater.)Battery, heavy-duty 850 cold-cranking amps/95 Amp-hr, maintenance-free with rundown protection and retained accessory power (Included and only available with (LZ0) Duramax 3.0L Turbo-Diesel I6 engine.)Transmission, 10-speed automatic with Electronic Precision shift, electronically controlled with overdrive, tow/haul mode and steering column paddle shifters. Includes Cruise Grade Braking and Powertrain Grade BrakingGVWR, 7200 lbs. (3266 kg) (Requires TK10*43 Crew Cab 4WD model with (LZ0) Duramax 3.0L Turbo-Diesel I6 engine.)Exhaust, dual system (Includes chrome exhaust tips. Not available with (L87) 6.2L EcoTec3 V8 engine.)Other EquipmentTrailering Package includes trailer hitch, 7-pin and 4-pin connectors and (CTT) Hitch GuidanceGMC Pro Safety includes (UEU) Forward Collision Alert, (UE4) Following Distance Indicator, (UKJ) Front Pedestrian Braking, (TQ5) IntelliBeam, (UHX) Lane Keep Assist with Lane Departure Warning, and (UHY) Automatic Emergency Braking (Includes (T8Z) Buckle to Drive and (HS1) Safety Alert Seat.)