2026 GMC Sierra 2500 AT4 

in Altona 

STRENGTH. CAPABILITY. PREMIUM OFF-ROAD CONFIDENCE.





The 2026 GMC Sierra 2500 AT4 Crew Cab 4WD combines heavy-duty strength with premium design and off-road capability. Built for those who need professional-grade power without sacrificing refinement, the Sierra AT4 delivers a commanding presence and rugged performance in any environment.



From demanding job sites to weekend backcountry trails, the Sierra 2500 AT4 is engineered to take on every challenge with confidence and style.


.;





DISTINCTIVE AT4 STYLE





» Bold AT4 grille with black chrome and signature red recovery hooks

» 20 high-gloss black aluminum wheels with all-terrain tires

» Unique AT4 badging and rugged exterior accents

» LED headlamps, taillamps, and fog lights for advanced visibility

» Off-road suspension with Rancho® monotube shocks

» Two-tone Jet Black with Kalahari interior featuring perforated leather-appointed seats

» Heated and ventilated front seats, heated rear outboard seats

» Heated, leather-wrapped steering wheel with AT4 badging

» Spray-on bedliner and 12 standard cargo tie-downs for added durability


.;





POWERFUL PERFORMANCE





» Standard 6.6L V8 gas engine with 401 hp and 464 lb-ft of torque

» Available 6.6L Duramax® Turbo-Diesel V8 with 470 hp and 975 lb-ft of torque

» 10-speed Allison® automatic transmission for smooth, efficient power delivery

» Advanced 4WD system with two-speed transfer case and off-road mode

» Skid plates and Hill Descent Control for confident off-road control

» Available Gooseneck/5th Wheel Prep Package for enhanced towing versatility

» Up to 22,500 lbs towing capacity (Duramax®) when properly equipped



;





ADVANCED CONNECTIVITY





» GMC Premium Infotainment System with 13.4 diagonal center touchscreen

» 12.3 customizable digital driver information display

» Wireless Apple CarPlay® & Android Auto" compatibility

» Available Head-Up Display for key driver information

» Wireless smartphone charging and multiple USB-C ports

» Wi-Fi® hotspot capability to keep you connected on the go

» Available Bose® Premium Sound System for immersive cabin audio


.;





ADVANCED SAFETY & DRIVER CONFIDENCE





» GMC Pro Safety standard, including:
* Automatic Emergency Braking

 Lane Departure Warning
* Forward Collision Alert
* Front Pedestrian Braking

 IntelliBeam® auto high beams
* Following Distance Indicator

» Available HD Surround Vision for enhanced visibility

» Available Adaptive Cruise Control with trailering capability

» Rear Cross Traffic Alert and Lane Change Alert with Side Blind Zone Alert

» Trailer Side Blind Zone Alert and Trailer Sway Control



;





WHY THE 2026 GMC SIERRA 2500 AT4 CREW CAB 4WD STANDS OUT





» Bold AT4-exclusive styling with rugged, premium details

» Off-road tuned suspension with advanced 4WD capability

» Available Duramax® diesel power with best-in-class towing confidence

» Premium, comfortable interior built for both work and play

» GMC Pro Safety technologies standard across every AT4



Rugged yet refined, the 2026 GMC Sierra 2500 AT4 Crew Cab 4WD delivers the strength you need, the capability you expect, and the confidence you deserveon or off the road.



Visit West Park Chevrolet Buick GMC in Altona and experience the professional-grade power of the new Sierra 2500 AT4 today.