OVERVIEW PRO, SLE, ELEVATION & SLT AT4 & AT4X DENALI & DENALI ULTIMATE SPECS INVENTORY BUILD & PRICE

2025

2026

2026 GMC SIERRA 1500

AT4 & AT4X

OFF-ROAD TRUCKS

AT4 AS CONFIGURED: {{as_shown_price}}{{as_shown_price_disclosure}} 
2026 GMC Sierra 1500 AT4 parked on a rugged terrain.

Vehicles shown throughout with an accessory(ies) from an independent supplier, which are not warranted by GM or its dealers. GM is not responsible for the safety or quality of independent supplier accessories. Any warranty is provided by the accessory manufacturer. 
BUILD & PRICE VIEW INVENTORY

AT4 STARTING AT

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AVAILABLE TOW UP TO

4,082 KG (9,000 LBS.)* 

KEY FEATURES

EXCLUSIVE ON AT4X

FRONT AND REAR ELECTRONIC LOCKING DIFFERENTIALS

FACTORY-INSTALLED

2" SUSPENSION LIFT

AVAILABLE

AT4X AEV EDITION 

ON AT4X

MULTIMATIC® DSSV DAMPERS

13.4" DIAGONAL PREMIUM

GMC INFOTAINMENT SYSTEM* WITH GOOGLE BUILT-IN* COMPATIBILITY 

(SUBSCRIPTION[S] REQUIRED FOR FULL FUNCTIONALITY) 

12.3" DIAGONAL DIGITAL

MULTICOLOUR DRIVER INFORMATION CENTRE
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EXPLORE SIERRA 1500 AT4 & AT4X OFF-ROAD TRUCK TRIMS

2026 Sierra 1500 AT4 in Summit White.

As Configured: {{as_shown_price}}{{as_shown_price_disclosure}} 

 AT4

STARTING AT

{{starting_price}}{{starting_price_disclosure}}

LOREM IPSUM

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KEY STANDARD FEATURES
  • Duramax® 3.0L Turbo-Diesel engine with 10-speed automatic transmission
  • 2" factory lift with off-road suspension and Rancho® monotube shocks 
  • Two-speed Autotrac® transfer case and underbody skid plates
  • Unique Jet Black interior with Kalahari accents, and heated and ventilated perforated leather front seating surfaces  

 

KEY AVAILABLE FEATURES
  • 15" diagonal multicolour Head-Up Display
  • 6.2L EcoTec3 V8 engine with 10-speed automatic transmission
BUILD & PRICE VIEW INVENTORY
2026 Sierra 1500 AT4x

As Configured: {{as_shown_price}}{{as_shown_price_disclosure}}

AT4X

STARTING AT

{{starting_price}}{{starting_price_disclosure}}

LOREM IPSUM

XXX

KEY STANDARD FEATURES
  • Front and rear electronic locking differentials
  • Multimatic DSSV dampers    
  • AEV stamped steel front bumper with front winch capability
  • 16-way power heated and ventilated front seats with massage feature

 

KEY AVAILABLE FEATURES
  • AEV Edition 
  • 6.2L EcoTec3 
  • V8 engine with 10-speed automatic transmission 
BUILD & PRICE VIEW INVENTORY
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    FEATURED EDITION
    The 2026 GMC Sierra 1500 AT4 Off-Road Truck Parked on Rocky Terrain with Mountains in the Distance.

    SIERRA 1500 AT4X AEV 

    The Sierra 1500 AT4X AEV off-road truck is built to help you master untamed terrain. Equipped by off-road recreational driving and overland adventure travel experts American Expedition Vehicles (AEV®), it features: 
    • AEV stamped steel front and rear bumpers with front winch capability​
    • Four hot-stamped boron steel AEV skid plates​
    • Exclusive AEV badging on bumpers, embroidered head restraints and all-weather floor liners​
    • AEV racing-inspired Salta wheels with 12-spoke design and recessed valve stems​ 
    • Off-road rocker panel protectors to help shield the sills and frame rails, and an optional bolt-on step assist when not off-roading
    BUILD & PRICE VIEW INVENTORY

    CAPABILITY

    The new peak of premium off-roading.
    The 2026 GMC Sierra AT4 Speeding Down a Dirt Road with Ease.
    Duramax 3.0L Turbo-Diesel Engine of the 2026 GMC Sierra 1500 AT4.

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    DURAMAX 3.0L TURBO-DIESEL

    Power through even the toughest terrain with efficiency, thanks to the standard Duramax 3.0L Turbo-Diesel engine.

     

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    6.2L V8 Engine of the 2026 GMC Sierra 1500 AT4.

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    6.2L ECOTEC3 V8 ENGINE

    This available engine has the serious power you need for big jobs or big fun.

     

    VIEW DETAILS

    Close-up of the AT4 Badging on the 2026 GMC AT4.

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    FACTORY-INSTALLED 2" LIFT

    AT4 and AT4X full-size trucks feature a 2" suspension lift to help provide serious clearance for your off-road adventures.
    The 2026 GMC Sierra 1500 AT4 Off-Road Suspension in Action.

    4 of 6

    AT4 OFF-ROAD SUSPENSION

    The GMC Sierra 1500 AT4 full-size truck offers powerful capability engineered to take on off-road obstacles and the tough terrain. 

     

    VIEW DETAILS

    Close-up view of the 2026 GMC Sierra 1500 AT4X Off-Road Suspension.

    5 of 6

    AT4X OFF-ROAD SUSPENSION

    AT4X takes off-road capability to the next level with serious suspension equipment that’s engineered for adventure. 

     

    VIEW DETAILS

    Close-up of the Hill Descent Controls of the 2026 GMC Sierra 1500 AT4.

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    HILL DESCENT CONTROL

    Both Sierra AT4 and AT4X off-road trucks come with Hill Descent Control, an antilock braking feature engineered to help provide a smooth, controlled descent on steep declines.
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    EXTERIOR

    Explore beyond the boundaries.
    The 2026 GMC Sierra 1500 AT4 Off-Road Truck Driving Over Rough Terrain.
    Close-up of the Recovery Hook on the 2026 GMC Sierra 1500 AT4 Off-Road Truck.

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    AEV OUTFITTING

    The AEV stamped steel front bumper with front winch capability and stamped boron steel front approach AEV skid plate on AT4X offer versatility and protection for off-roading.  
    Close-up of the 33 Inch Mud Terrain Tires on the 2026 GMC Sierra 1500 AT4.

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    EXCLUSIVE AT4X WHEELS

    Rugged 33" Goodyear® Wrangler Territory mud terrain tires and 18" painted aluminum wheels with dark painted pockets.
    Close-up of the Tires on the 2026 GMC Sierra 1500 AT4 Off-Road Truck.

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    33" MT TIRES

    Available off-road MT tires help you confidently conquer the terrain in your AT4 — even in harsh conditions. 
    Close-up of the 2026 GMC Sierra 1500 AT4 Front Bumper and Grille.

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    AT4 FRONT BUMPER AND GRILLE 

    Grille with black chrome header, insert bars with gloss-black accents and red recovery hooks.*

    Denali shown
    Truck Bed of the 2026 GMC Sierra 1500 AT4 Off-Road Truck.

    5 of 6

    SPRAY-ON BEDLINER

    AT4 and AT4X off-road trucks offer high-strength steel cargo beds featuring spray-on bedliner with GMC logo.

    Denali shown
    View of the MultiPro Tailgate in Use on the 2026 GMC Sierra 1500 AT4.

    6 of 6

    MULTIPRO™ TAILGATE

    Make light work of almost any job with the world’s first six-function GMC MultiPro Tailgate.

     

    VIEW DETAILS

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    INTERIOR

    An uncompromisingly premium interior.

    AT4X with full-grain leather seats in Obsidian Rush featuring red and white double-needle stitching.
    Interior View of the Dashboard and Infotainment System in the 2026 GMC Sierra 1500 AT4.

    AT4 with perforated front leather seating surfaces in Jet Black with Kalahari interior.
    Interior View of the Dashboard and Infotainment System in the 2026 Sierra 1500 AT4.
    Close-up of the 13.4 Inch Diagonal Premium GMC Infotainment System of the 2026 GMC Sierra 1500 AT4.

    13.4" DIAGONAL PREMIUM GMC INFOTAINMENT SYSTEM*

    The colour touchscreen with Google built-in* compatibility (subscription[s] required for full functionality) and voice-activated technology for your phone provides a seamless way to customize your entertainment.
    Close-up of the 12.3 Inch Diagonal Driver Infotainment Centre of the 2026 GMC Sierra 1500 AT4.

    12.3" DIAGONAL DRIVER INFORMATION CENTRE

    Customize your driver display by choosing from Classic, Progressive, Digital or Clean configurations.

    TECHNOLOGY

    A smart driving experience for all your adventures.
    Interior View of the Infotainment System in the 2026 Sierra 1500 AT4.

    Denali Ultimate shown.
    Close-up of a Driver Using the In-Vehicle Trailering App on the Infotainment Screen of the 2026 Sierra 1500 AT4.

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    IN-VEHICLE TRAILERING APP*

    This integrated app in your Premium GMC Infotainment System* offers custom trailer profiles, trailer statuses and more.

    VIEW DETAILS

    Yukon Denali shown.
    Overhead View of a Person Sitting in a Car while using the myGMC Mobile App.

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    AVAILABLE MYGMC MOBILE APP*

    Experience convenience, command and control in or out of your vehicle with the myGMC mobile app.*

     

    VIEW DETAILS

    Denali Ultimate shown.
    Close-up of the Infotainment Screen in the 2026 GMC Sierra 1500 AT4 Displaying one of the Camera Views.

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    UP TO 14 CAMERA VIEWS

    Navigate tight parking lots and manoeuvre your full-size truck and trailer with confidence, using up to 14 available camera views.*

     

    VIEW DETAILS

    View of the Head-up Display inside the 2026 GMC Sierra 1500 AT4.

    4 of 7

    HEAD-UP DISPLAY

    The available 15" diagonal multicolour Head-Up Display helps you keep your eyes on the road by projecting key information directly onto the windshield.  

     

    VIEW DETAILS

    Close-up View of the Adaptive Cruise Control Button on the Steering Wheel of the 2026 GMC Sierra 1500 AT4.

    5 of 7

    ADAPTIVE CRUISE CONTROL*

    Allows you to set a cruise control speed and automatically follow a detected vehicle ahead at a driver-selected following gap.  

     

    VIEW DETAILS

    Close-up of the Centre Console in the 2026 GMC Sierra AT4 Off-Road Truck.

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    WIRELESS CAPABILITY

    Personalize your in-vehicle entertainment and more by connecting your compatible smartphone to your in-vehicle touchscreen via phone projection. 
    Close-up of the OnStar Button inside the 2026 GMC Sierra 1500 AT4.

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    ONSTAR® BASICS*

    Drive more confidently with up to 8 years of core OnStar services including mobile app commands,* connectivity supporting for select apps that provide in-vehicle voice assistance, real-time traffic and navigation apps with real-time traffic, and Automatic Crash Response.*

     

    VIEW DETAILS

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    SAFETY AND DRIVER ASSISTANCE

    Go forth with added confidence.
    The 2026 GMC Sierra 1500 AT4 Off-Road Parked alone on Rocky Terrain.

    GMC PRO SAFETY* AND MORE 

    Sierra 1500 pickup truck offers a suite of collision-avoidance and driver assistance technologies designed to help enhance your awareness. 

     

    Plus Sign Icon Plus Sign Icon VIEW DETAILS

    SPEC HIGHLIGHTS
    • SIERRA 1500 AT4
    • SIERRA 1500 AT4X 
    Side Profile View of the GMC Sierra 1500 AT4 Off-Road Truck

    The 2026 Sierra 1500 AT4 Crew Cab is offered in a 4WD configuration and can be equipped with a short or standard bed. 

     

    MAX AVAILABLE HORSEPOWER

    420 hp*

    PASSENGER CAPACITY 

    Up to 5

    STANDARD TORQUE

    495 lb.-ft.*

    FRONT HEADROOM

    1,092 mm (43.0")

    GROUND CLEARANCE

    281 mm (11.1 in.)

    CARGO BED VOLUME

    SHORT BOX:

    STANDARD BOX:

    1,781 L (62.9 cu. ft.)*           

    2,030 L (71.7 cu. ft.)*
    COMPARE TRIMS
    Side Profile View of the GMC Sierra 1500 AT4X Off-Road Truck

    The 2026 Sierra 1500 AT4X Crew Cab is offered in a 4WD configuration and is equipped with a short bed. 

     

    MAX AVAILABLE HORSEPOWER

    420 hp*

    PASSENGER CAPACITY

    Up to 5

    STANDARD TORQUE

    495 lb.-ft.*

    FRONT HEADROOM

    1,092 mm (43.0")

    GROUND CLEARANCE

    292 mm (11.5 in.) 

    CARGO BED VOLUME

    1,781 L (62.9 cu. ft.)*

    MAX FRONT APPROACH ANGLE

    34.0 degrees

    MAX REAR DEPARTURE ANGLE

    24.4 degrees
    COMPARE TRIMS

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