2025 GMC Sierra
2500HD AT4X AEV Edition in Onyx Black

The 2025 GMC Sierra 2500HD AT4X AEV Edition in Onyx Black, right hand drive, delivers serious off-road readiness, full-size pickup strength and luxury refinement in one bold package. Built for drivers who demand heavy-duty capability, over-land styling and premium comfort — and fully engineered for use in Australia and other right-hand-drive markets worldwide.

Under the bonnet is the 6.6-litre Duramax® turbo-diesel V8, paired with an Allison® 10-speed automatic transmission and permanent four-wheel drive (4WD). This powerhouse setup produces around 470 hp (351 kW) and approximately 1,322 Nm of torque, with verified towing capacity equal to the factory left-hand-drive variant. Whether you’re towing a large trailer, heading off-grid or simply dominating the road, the Sierra handles it with confidence.

The AT4X AEV badge brings trail-ready hardware: stamped-steel front and rear bumpers from American Expedition Vehicles (AEV®), heavy-duty skid plates under steering gear and transfer case, 18-inch Salta gloss-black wheels and robust 35-inch Goodyear Territory MT tyres. Together, they provide serious terrain clearance and durability, while Onyx Black exterior paint and Obsidian Rush interior leather emphasise elevated presence and style.

Inside, the cabin blends rugged utility with upscale comfort. Full-grain leather seats with technical-grain accents, authentic Vanta Ash wood trim, heated/ventilated front chairs, wireless charging and a premium Bose® 12-speaker audio system create a refined environment. A 13.4-inch infotainment display, heads-up display and trailer-aware driver-assist features such as HD Surround Vision, blind-spot alert and multi-camera trailering tech deliver modern convenience and safety assurance.

The right-hand-drive conversion is undertaken by Autogroup International through its ISO 9001:2015-certified engineering process. Every steering column, pedal box, dashboard, wiring harness and electronic control is mirror-image re-engineered to OEM-equivalent specification, ensuring factory-level performance, safety and comfort. This vehicle is fully engineered and documented for the Australian market and other right-hand-drive destinations without compromise.

Personalisation options abound: upgraded wheel and tyre sets, protection and touring packs, bed accessories, premium paint or accent finishes, and bespoke interior themes — each designed to enhance capability, style and long-term value.

Every right-hand-drive 2025 GMC Sierra 2500HD AT4X AEV Edition comes with a factory-backed 3-year unlimited-kilometre warranty, mirroring the OEM’s original terms. It also includes nation-wide 24/7 roadside assistance and a service-and-parts kit, supported through the Melbourne service centre.

Call the International Sales Team on +94 785 739 875 or the Australian team on (03) 9765 1300, or email [email protected]
to request a build consult, confirm colour and interior, and review delivery timelines.