Vehicle Details
Body Style
Truck
Engine
3.0L 6Cyl
Exterior Colour
Silver
Interior Colour
Black
Transmission
Automatic
Drivetrain
4×4
Stock
303768
Fuel Type
Diesel
Trim Details
Crew Cab Standard Box 4-Wheel Drive AT4
Description
The 2026 GMC Sierra 1500 AT4 combines premium comfort, advanced technology, and serious off-road capability into one bold and refined full-size pickup. Designed for drivers who demand rugged performance without sacrificing luxury, this AT4 stands out with its aggressive styling, turbo-diesel efficiency, and trail-ready confidence, equally at home on the highway, worksite, or backcountry adventure.Â
Performance & CapabilityÂ
Engine: Duramax® 3.0L Turbo-Diesel delivering impressive torque, smooth power, and excellent long-distance efficiencyÂ
Transmission: 10-speed automatic transmission with electronic precision shift for seamless acceleration and responsive controlÂ
Drivetrain: Autotrac® Two-Speed 4WD system for dependable traction in changing road and terrain conditionsÂ
Off-Road Suspension Package engineered for enhanced ground clearance and confident trail capabilityÂ
Hill Descent Control for added stability on steep grades and uneven terrainÂ
Automatic Locking Rear Differential for improved traction in mud, snow, gravel, or rough backroadsÂ
Skid Plates helping protect vital underbody components during off-road adventuresÂ
Trailering Equipment Package featuring integrated trailer brake controller, Hitch Guidance with Hitch View, and Trailering App supportÂ
Trailer Tire Pressure Monitoring Sensors for added towing confidence and awarenessÂ
Heavy-Duty Air Filter, 220-Amp Alternator, and Engine Block Heater built for demanding climates and workloadsÂ
Dual Exhaust System adding both style and performance presenceÂ
Winter & Weather ComfortÂ
Heated & Ventilated Front Seats designed for year-round driving comfortÂ
Heated Rear Outboard Seats for second-row passenger convenience during colder monthsÂ
Heated Steering Wheel providing warmth on chilly morningsÂ
Remote Vehicle Start allowing the cabin to warm up or cool down before you step insideÂ
Dual-Zone Automatic Climate Control with moisture and air temperature sensors for personalized comfortÂ
Rain-Sensing Windshield Wipers automatically adjusting to changing weather conditionsÂ
Deep-Tinted Glass helping reduce glare and maintain cabin privacyÂ
Premium All-Weather Floor Liners with removable carpet inserts for durable year-round protectionÂ
Rear Window Defogger and reinforced heating system for cold-weather readinessÂ
Interior Comfort & TechnologyÂ
Front Bucket Seats with power driver and front passenger adjustments for personalized comfortÂ
Driver Memory Settings for mirrors and seating convenienceÂ
Power Sliding Rear Window and Rear Seat Storage Package enhancing versatility and utilityÂ
Wireless Charging Pad with multiple USB ports and 120V power outlets for convenient connectivityÂ
Keyless Open & Push-Button Start for quick and effortless accessÂ
Wireless Apple CarPlay® & Android Autoâ„¢ compatibility for seamless smartphone integrationÂ
GMC Premium Infotainment System with massive 13.4" touchscreen, Google Built-In compatibility, and navigation capabilityÂ
12" Digital Driver Information Centre with customizable driving information displayÂ
Bose® Premium Audio System delivering rich, immersive sound throughout the cabinÂ
Power Sunroof adding an open-air feel and extra natural lightÂ
Power Tilt & Telescopic Steering Column wrapped in premium materials for added refinementÂ
Rear Camera Mirror and Bed View Camera providing enhanced visibility when towing or maneuveringÂ
Safety & Driver AssistanceÂ
GMC Pro Safety suite delivering advanced confidence and awareness technologiesÂ
Forward Collision Alert with Automatic Emergency Braking for added protection in trafficÂ
Lane Keep Assist with Lane Departure Warning helping maintain confident highway drivingÂ
Front Pedestrian Braking and Rear Pedestrian Alert for improved awareness around the vehicleÂ
Rear Cross Traffic Braking and Trailer Side Blind Zone Alert for safer lane changes and reversingÂ
HD Surround Vision offering a 360-degree camera perspective for parking and trailering precisionÂ
Front & Rear Park Assist making tight spaces easier to navigateÂ
Adaptive Cruise Control for added convenience during long-distance travelÂ
Following Distance Indicator and Driver Safety Alert Seat enhancing driver awarenessÂ
Teen Driver Technology and Buckle-to-Drive encouraging safer driving habitsÂ
Exterior Styling & UtilityÂ
Exterior Colour: Sterling Metallic — a sleek and sophisticated finish with modern depth and rugged appealÂ
18" Machined Aluminum Wheels with dark-painted pockets for an aggressive AT4 appearanceÂ
Goodyear Territory Mud-Terrain Tires delivering enhanced off-road grip and commanding presenceÂ
Signature LED Fog Lamps, LED Cargo Bed Lighting, and Perimeter Lighting for visibility day or nightÂ
GMC MultiPro Tailgate offering multiple loading, step, and workstation configurationsÂ
EZ Lift Power Lock & Release Tailgate for added convenience and functionalityÂ
Spray-On Bedliner and 120V Bed-Mounted Power Outlet ready for worksite or recreational useÂ
Off-Road High-Clearance Assist Steps making cabin access easier while maintaining trail capabilityÂ
Red Front Recovery Hooks adding rugged functionality and signature AT4 stylingÂ
Chrome and dark exterior accents combining premium refinement with aggressive off-road attitudeÂ
Whether you’re towing heavy equipment, navigating winter roads, or exploring off-the-grid destinations, the 2026 GMC Sierra 1500 AT4 delivers diesel-powered capability, premium craftsmanship, and advanced technology in one exceptionally versatile truck. It’s built for drivers who want refined comfort without compromising rugged performance.Â
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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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Steering Wheel Audio Controls
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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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Wheel, 17" x 8" (43.2 cm x 20.3 cm) full-size, steel spare
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Wheelhouse liners, rear
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Bumper, front, body-colour lower
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Bumper, rear body-colour with corner steps
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Grille (Black chrome header and grille insert bars with gloss black accents.)
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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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Lighting, perimeter
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Taillamps, LED LED signature taillight with LED stop, turn & reverse and Fade-on/Fade-off animation
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Heated Mirrors
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Mirror Memory
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Power Folding Mirrors
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Power Mirror(s)
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Mirror caps, high gloss Black
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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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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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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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Door handles, body-colour
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Bed Liner
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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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Passenger Adjustable Lumbar
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Power Passenger Seat
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Heated Front Seat(s)
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Mirror Memory
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Seat Memory
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Cooled Front Seat(s)
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Pass-Through Rear Seat
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Rear Bench Seat
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Heated Rear Seat(s)
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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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Adjustable Steering Wheel
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Steering wheel, wrapped
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Heated Steering Wheel
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Driver Information Centre, enhanced, 12.3" diagonal reconfigurable multicolour digital display
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GMC Premium information Display-13.4" diagonal Multicolour I touch screen
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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
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Compass, located in instrument cluster
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Exterior Temperature Display, located in radio display
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Brake lining wear indicator
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Power Windows
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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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Security System
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Steering column lock, electrical
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Wireless Charging
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Power outlet, interior power outlet, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
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Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) interior power outlet)
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Auxiliary Audio Input
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MP3 Player
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USB ports, (2) charge-only, 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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Air vents, rear
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Rear Defrost
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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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Diesel Fuel
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Straight 6 Cylinder Engine
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Turbocharged
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10-Speed A/T
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A/T
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Transmission w/Dual Shift Mode
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Rear axle, 3.23 ratio
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Pickup bed
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GVWR, 7200 lbs. (3266 kg) (Requires TK10*43 Crew Cab 4WD model with (LZ0) Duramax 3.0L Turbo-Diesel I6 engine.)
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Keyless Start
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Air filter, heavy-duty
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Automatic Stop/Start
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Hill Descent Control
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Locking/Limited Slip Differential
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Transfer case, two-speed, electronic Autotrac with push button control (4WD models only)
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Suspension, Off-Road with 2" factory installed lift and monotube shocks
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Four Wheel Drive
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Alternator, 220 amps
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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.)
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Frame, fully-boxed, hydroformed front section
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Trailer brake controller, integrated
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Tow Hooks
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Skid Plates
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Cargo tie downs (12), fixed, rated at 500 lbs per corner
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Power Steering
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4-Wheel Disc Brakes
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ABS
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Exhaust, dual system (Includes chrome exhaust tips. Not available with (L87) 6.2L EcoTec3 V8 engine.)
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Exhaust, aluminized stainless-steel muffler and tailpipe
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Tow Hitch
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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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Lane Keeping Assist
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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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Hitch View with image adjustment, Pan/Zoom/Tilt
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Hitch Guidance
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Aerial View Display System
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Back-Up Camera
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Trailer Camera Provisions and trailer viewing software
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Rear Parking Aid
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Following Distance Indicator (Included and only available with (PDI) GMC Pro Safety.)
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Lane Departure Warning
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Lane Keeping Assist
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Blind Spot Monitor
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Cross-Traffic Alert
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Rear Pedestrian Alert
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Driver Monitoring
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Seat Belt Adjustable Guide Loops, front row only
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Rear Seat Belt Indicator
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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) GMC Pro Safety.)
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Tire Pressure Monitor
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Rear Seat Reminder
No matches were found.
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Vehicle NameGMC Sierra 1500
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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 CodeMQC
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Trans Type10
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Trans Description Cont.Automatic
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First Gear Ratio (:1)4.70
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Second Gear Ratio (:1)2.99
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Third Gear Ratio (:1)2.15
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Fourth Gear Ratio (:1)1.77
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Fifth Gear Ratio (:1)1.52
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Sixth Gear Ratio (:1)1.28
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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)0.64
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Reverse Ratio (:1)4.87
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Transfer Case ModelMagna MP3023/4
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Transfer Case Gear Ratio (:1), High1.00
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Transfer Case Gear Ratio (:1), Low2.69
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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)64.54
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Front Hip Room (in)60.78
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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)64
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Second Hip Room (in)59.24
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Gross Axle Wt Rating - Front (lbs)3800
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Gross Axle Wt Rating - Rear (lbs)3800
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Curb Weight - Front (lbs)2927
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Curb Weight - Rear (lbs)1956
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Gross Vehicle Weight Rating Cap (lbs)7200
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Gross Combined Wt Rating (lbs)15000
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EnerGuide Estimate - City (L/100 km)11.0
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EnerGuide Estimate - Hwy (L/100 km)9.9
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G/km Of CO2 Emissions283
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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)8800
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Wt Distributing Hitch - Max Tongue Wt. (lbs)880
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Fifth Wheel Hitch - Max Trailer Wt. (lbs)6400
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Fifth Wheel Hitch - Max Tongue Wt. (lbs)1600
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Maximum Trailering Capacity (lbs)9000
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Engine TypeTurbocharged Diesel I6
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Fuel SystemDirect Injection
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Engine Order CodeLZ0
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Displacement3.0L/183
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SAE Net Horsepower @ RPM305 @ 3750
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SAE Net Torque @ RPM495 @ 2750
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Cold Cranking Amps @ 0° F (Primary)850
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Maximum Alternator Capacity (amps)220
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Frame TypeHydroformed
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Suspension Type - FrontIndependent
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Suspension Type - RearSolid Axle
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Spring Capacity - Front (lbs)3800
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Spring Capacity - Rear (lbs)3850
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Axle Capacity - Front (lbs)3800
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Axle Capacity - Rear (lbs)3800
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Axle Ratio (:1) - Front3.23
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Axle Ratio (:1) - Rear3.23
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Stabilizer Bar Diameter - Front (in)1.3
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Front Tire Order CodeR3O
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Rear Tire Order CodeR3O
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Spare Tire Order CodeQAQ
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Front Tire SizeLT275/65R18C
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Rear Tire SizeLT275/65R18C
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Spare Tire Size255/80R17SL
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Front Tire Capacity (lbs)3800
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Rear Tire Capacity (lbs)3800
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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)18 x 8.5
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Rear Wheel Size (in)18 x 8.5
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Spare Wheel Size (in)17 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 TypeElectric Rack & Pinion
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Turning Diameter - Curb to Curb (ft)50.7
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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)13 x 1.18
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Rear Brake Rotor Diam x Thickness (in)13.6 x 0.79
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Fuel Tank Capacity, Approx (L)91
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Wheelbase (in)157
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Length, Overall (in)242.45
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Width, Max w/o mirrors (in)81.24
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Height, Overall (in)78.24
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Ground Clearance, Front (in)10.97
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Ground Clearance, Rear (in)10.97
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Cargo Box Length @ Floor (in)79.44
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Cargo Box Width @ Floor (in)71.4
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Cargo Box Width @ Wheelhousings (in)50.63
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Cargo Box (Area) Height (in)22.4
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Cargo Volume (ft³)71.7
No matches were found.
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