2025 GMC Sierra 2500 HD
Vehicle Make:
2025 GMC Sierra 2500 HD
Configuration Options:
Crew Cab, Standard bed
Trim Options:
AT4, Denali, AT4X, Denali Ultimate, AT4X AEV Edition
Engine Options:
6.6L V8 Petrol, 6.6L Duramax Turbo diesel
Built for Work. Engineered for Adventure.
The 2025 GMC Sierra 2500 AT4 and AT4X deliver serious capability where roads end and real work begins. These aren’t just trucks with off-road badges – they’re factory-engineered systems designed to handle Australia’s toughest terrain while maintaining the refinement you expect from a premium vehicle.
From the enhanced AT4 with its all-terrain suspension and skid plates, to the flagship AT4X featuring Multimatic DSSV dampers and electronic locking differentials, every component is calibrated to work together. The exclusive AT4X AEV Edition adds American Expedition Vehicles’ legendary protection systems – stamped steel bumpers, boron steel skid plates, and integrated recovery points that are tested as a complete package.
Ready for Tough Australian Conditions.
Converted to right-hand drive by Autogroup International with full ADR compliance, these trucks bring American capability to Australian conditions. Choose from high-torque Duramax diesel (470hp/1,324Nm) or robust V8 petrol power, both paired with heavy-duty 10-speed automatic transmission and advanced towing systems rated up to 7,326kg.
With 5-year unlimited kilometre warranty and local support across Australia, the Sierra 2500 AT4 series delivers uncompromising capability without compromising on refinement.
Experience The GMC Sierra 2500
AT4
The AT4 is available in Regular Cab, Extended Cab and Crew Cab configurations. Featuring off-road suspension, Twin-Tube Rancho® Shocks, skid plates, and hill descent mode. Features 13.4″ infotainment screen and perforated leather seats with Kalahari accents.
AT4X
The off-road optimised Sierra HD AT4X trim is now available at Autgroup International. Featuring 35″ Goodyear® Territory MT tyres & factory-installed 1.5″ suspension lift, driver-selectable e-locking rear differential, adaptive cruise control & head-up display.
DENALI
The Sierra 2500HD Denali features Denali-exclusive open-pore wood, patterned aluminium trim, 13.4″ centre touchscreen, 12.3″ digital driver display (biggest in class), 15″ head-up display, Bose premium sound and HS surround vision. Standard 20″ ultra bright wheels and rear wheelhouse liners.
DENALI ULTIMATE
The most premium Sierra HD yet, featuring 6.6L Duramax Turbo-Diesel and Allison 10-speed transmission. Distinguished by unique grille, exclusive 20-inch ultra-bright machined aluminium wheels, Mount Denali fender badging, and six-way MultiPro Tailgate with standard Kicker audio system.
AT4X AEV EDITION
The AEV package adds heavy-duty steel bumpers with improved approach/departure angles, hot-stamped boron steel skid plates for underbody protection, and winch-ready front bumper with cast recovery points. AEV branding throughout signifies the enhanced off-road capabilities and partnership.
Leader in Right Hand Drive American Vehicle...
Is there a warranty for the vehicles you sell?
Every vehicle includes a Factory-Backed 3-Year Warranty with conditions identical to the original manufacturer's warranty.
Are your right-hand drive conversions compliant with Australian standards?
Absolutely. Our vehicles meet Australian Motor Vehicle Standards Act requirements and we're ISO 9001:2015 certified for RHD conversions.
Where do you provide servicing in Australia?
All servicing is performed at our Australian facility, based in Melbourne, by our trained technicians who specialise in converted American vehicles.
Do you supply genuine spare parts?
Yes. Our Australian parts team stocks OEM-grade service parts, accessories, and consumables specifically for converted American vehicles.
Can I schedule a test drive?
Absolutely! You can schedule a test drive by heading over to the contact page and getting in touch with our team.