American Trucks Australia
2026 GMC SIERRA 2500HD AT4X
2026 GMC SIERRA 2500HD AT4X
2026 GMC Sierra 2500HD AT4X
4WD Crew Cab
Australia Complied & Right-Hand Drive Conversion
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.
- Sterling Metallic exterior paint
- 18" machined aluminium wheels with High Gloss Black accents
- LT305/70R18 35" mud-terrain tyres — full-size matching spare included
- 1.5" factory suspension lift with DSSV performance dampers front and rear
- High Gloss Black front and rear bumpers with CornerSteps
- Power retractable Black assist steps with LED lighting
- GMC MultiPro Tailgate — six functional load and access configurations
- Spray-on bedliner with GMC logo
- Animated LED projector headlamps with LED daytime running lamps
- Integrated LED fog lamps
- Animated LED signature tail, stop, turn and reverse lamps
- Power sunroof
- Deep tinted glass
- Power-folding trailering mirrors with heating, auto-dimming, turn signals and puddle lamps
- High Gloss Black mirror caps
- Rain-sensing front wipers
- LED cargo bed lighting
- Full Grain Leather — Obsidian Rush seat trim
- 16-way power driver seat with lumbar and massage
- 16-way power passenger seat with lumbar and massage
- Heated and ventilated front seats
- Heated second row outboard seats
- 60/40 folding rear bench with full under-seat storage
- Heated leather-wrapped steering wheel
- 13.4" diagonal Premium GMC Infotainment System
- Google built-in apps — navigation and voice assistance
- Wireless Apple CarPlay & Android Auto
- Bose Premium 12-speaker sound system with Richbass woofer
- MultiPro Tailgate Audio System by Kicker
- Adaptive cruise control
- Remote vehicle start system
- Wireless phone charging
- Wi-Fi hotspot capable
- Dual-zone automatic climate control
- 12.3" digital driver information display
- 15" multicolour head-up display
- Rear Camera Mirror with auto-dimming and full camera display
- 120V AC power outlet — instrument panel and bed mounted
- Universal Home Remote
- Premium floor liners front and rear
- 1.5" factory suspension lift — DSSV dampers front and rear
- Short/long arm front suspension with 3-stage leaf springs from 3500
- Driver-selectable full-locking rear differential (e-locking)
- Electronic two-speed AutoTrac transfer case with push button control
- Hill descent control and hill start assist
- Front aluminium skid plates and transfer case steel skid plate
- Ground clearance: 294 mm
- Digital Variable Steering Assist — auto-adjusts to speed and conditions
- 4-wheel disc brakes with DURALIFE rotors
- Fully-boxed hydroformed frame
- Maximum towing capacity: 9,072 kg
- Integrated trailer brake controller
- ProGrade Trailering System with in-vehicle trailering app
- Hitch Guidance with Hitch View — Pan/Zoom/Tilt
- Trailer side blind zone alert
- Trailer tyre pressure monitoring system
- Bed view camera with two trailer camera provisions
- 7-pin and 4-pin trailer connectors
- Electronic trailer sway control
- 136 L fuel tank
- Automatic emergency braking with front pedestrian braking
- Forward collision alert with following distance indicator
- Lane departure warning
- HD surround vision — 360° overhead camera view
- Front and rear ultrasonic park assist
- Rear cross traffic alert
- Blind spot detection with cross path detection
- StabiliTrak stability and traction control with roll avoidance
- Dual-stage front airbags, seat-mounted side airbags and curtain airbags
- Tyre pressure monitoring with auto-learn and fill alert
- OnStar emergency services capable
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.
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