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Excludes on-road costs — registration, stamp duty, CTP, transfer fees. Includes RHD conversion & ADR compliance.
Ref · ATASHOP-2026-GMC-SIERRA-2500HD-AT4X
Custom Order
4WD Crew Cab
Full factory-grade RHD conversion in our Brisbane workshop. Not a flip, not a quick-fix — every component re-engineered.
Engineered to Australian Design Rules, fully compliant, ready to register in any state. Paperwork sorted before delivery.
Australia-wide delivery — Brisbane, Sydney, Melbourne, Perth, anywhere in between. Drive away, no surprises.
We'll come back within one business day with a firm written quote and timeline. No deposit required to reserve.
If you're after a heavy-duty off-road beast that doesn't compromise on luxury or towing capability, the 2026 GMC Sierra 2500HD AT4X 4WD Crew Cab is in a class of its own. Powered by the legendary 6.6L Duramax Turbo-Diesel V8 producing 350 kW and 1,322 Nm of torque, paired with the 10-speed automatic transmission, this truck is engineered to conquer the toughest terrain while hauling heavy loads with absolute confidence. With a factory-fitted 38mm suspension lift, DSSV dampers and 35" mud-terrain tyres, the AT4X is GMC's most capable off-road heavy-duty truck ever built.
AT4X Exterior
AT4X Interior
Off-Road Capability
Towing Technology
Safety Technology
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3-Year Unlimited Kilometre Warranty
Professionally converted to Right-Hand Drive and fully ADR compliant for Australian registration. Comprehensive warranty package includes roadside assistance.
Enquire Today to Secure This Truck One of the most capable off-road heavy-duty trucks available on the Australian market — combining extreme off-road performance, luxury comfort and serious towing capability in one package.
Disclaimer: Photos displayed are for reference purposes only and may not represent the exact vehicle available. Specifications, features, and colours may vary. All prices exclude on-road costs including registration, transfer fees, stamp duty, and any other government or statutory charges unless otherwise stated. All weights, measurements and towing figures displayed are approximate only and are based on manufacturer data. These figures may vary depending on vehicle configuration, options fitted, and operating conditions. It is the customer's sole responsibility to conduct their own independent research and seek appropriate professional advice to verify all specifications, weights, and ratings prior to purchase. American Trucks Australia accepts no liability for any reliance placed on the figures displayed.
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