The 2026 GMC Sierra AT4 is built for drivers who want full-size truck strength with premium comfort and confident 4x4 capability. Finished in Grey with a Black interior, this Sierra AT4 at Steele Chevrolet Buick GMC in Dartmouth delivers bold presence, a powerful 6.2 L gas engine, and the smooth control of an automatic transmission.

Designed to handle work, travel, and changing Maritime road conditions, the 2026 GMC Sierra AT4 blends rugged engineering with refined road manners. Its four-wheel-drive system adds confidence on rough roads, gravel, mud, and winter streets, while the strong V8 power gives this truck the muscle expected from a serious pickup.

FEATURES OF THE Sierra AT4

Off-road focused AT4 truck design
Standard four-wheel drive capability included
Strong 6.2-litre gas V8 power
Automatic transmission for smooth shifting

TRUCK FEATURES

Four-wheel drive for added traction
Pickup box supports daily hauling
Built for towing and cargo tasks
High ground clearance for rough roads

ADVANCED SAFETY FEATURES

Strong truck stance aids visibility
Four-wheel drive boosts slippery-road control
Large mirrors support towing awareness
Solid build inspires everyday confidence

PERFORMANCE AND EFFICIENCY

6.2-litre gas engine delivers strong output
Automatic transmission supports smooth acceleration
Four-wheel drive improves off-road capability
V8 performance suits towing and hauling

COMFORT AND CONVENIENCE

Spacious cabin supports daily comfort
Black interior offers a clean look
Full-size truck room for passengers
Easy highway cruising in all seasons

TECHNOLOGY AND CONNECTIVITY

Driver-focused layout keeps controls accessible
Modern truck cabin supports daily use
Clear instrumentation helps monitor performance
Convenient automatic operation reduces effort

CARGO SPACE

Pickup bed handles gear and supplies
Useful box space for weekend projects
Truck design supports larger cargo
Cabin and bed offer flexibility

WHAT OTHER OWNERS LIKE

Strong V8 power for confident driving
Four-wheel drive in bad weather
Comfortable ride for a full-size truck
Useful balance of work and comfort

In Dartmouth, this 2026 GMC Sierra AT4 stands out as a smart choice for drivers who need real truck capability without giving up comfort. The Grey exterior gives it a clean, upscale look, while the Black interior keeps the cabin classic and practical for daily use.

Power comes from a 6.2 L gas engine, a well-known choice for buyers who want strong acceleration, easy passing power, and the strength needed for towing and hauling. Paired with an automatic transmission, this setup helps the truck feel smooth and controlled in city traffic, on the highway, and on rougher routes.

The four-wheel-drive system is a key part of this Sierra AT4's appeal. It helps deliver better traction when roads are covered in snow, slush, gravel, or mud. For drivers in Nova Scotia, that extra confidence can make a real difference during changing weather and road conditions.

This truck is also designed to serve many roles. It can support jobsite needs during the week, then carry gear for camping, home projects, or weekend travel. The pickup bed adds practical utility, and the full-size cabin helps keep passengers comfortable on longer drives.

Inside, the Black interior gives this 2026 GMC Sierra AT4 a refined and purposeful feel. The layout is designed to keep important controls within easy reach, helping the driver stay focused and comfortable. The cabin space also supports the needs of families, workers, and anyone who wants extra room.

For buyers shopping at Steele Chevrolet Buick GMC, this 2026 GMC Sierra AT4 offers a great mix of V8 power, 4x4 confidence, and everyday versatility. It is a full-size truck that feels ready for demanding tasks, changing seasons, and comfortable daily driving in Dartmouth and beyond.

This 2026 GMC Sierra AT4's VIN is: 3GTUUEEL2TG364510 .

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Engine: Gas V8 6.2L/376
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.)featuring Dynamic Fuel Management,REAR AXLE 3.23 RATIO,TECHNOLOGY PACKAGE includes (DRZ) Rear Camera Mirror and (UV6) Multicolour 15 Diagonal Head-Up Display (Includes (UVN) Bed View Camera.),ACTIVE EXHAUST DUAL SPORT-MODE ENABLEDGVWR 7100 LBS. (3221 KG),AT4 PREFERRED EQUIPMENT GROUP includes standard equipment,TRANSMISSION 10-SPEED AUTOMATIC WITH ELECTRONIC PRECISION SHIFT ELECTRONICALLY CONTROLLED with overdrive and tow/haul mode and steering column paddle shifters. Includes Cruise Grade Braking and Powertrain Grade Braking,AT4 PREFERRED PACKAGE includes (UG1) Universal Home Remote and (A48) rear sliding power window,SUNROOF POWER,ENGINE 6.2L ECOTEC3 V8 (420 hp [313 kW] @ 5600 rpm 460 lb-ft of torque [624 Nm] @ 4100 rpm)