American Trucks Australia
2026 GMC SIERRA 3500HD AT4
2026 GMC SIERRA 3500HD AT4
2026 GMC Sierra 3500HD AT4
4WD Crew Cab
Australia Complied & Right-Hand Drive Conversion
For those who demand serious towing and payload capability without giving up off-road performance or interior luxury, the 2026 GMC Sierra 3500HD AT4 Crew Cab is the answer. 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 handle the heaviest caravans, fifth wheelers, machinery and commercial loads with confidence. The factory-fitted X31 Off-Road Package with Rancho twin-tube shocks, skid plates and hill descent control means it performs just as capably when the bitumen runs out.
- Costal Dune exterior paint
- 20" High Gloss Black aluminium wheels — 8-spoke design
- LT275/65R20 all-terrain tyres — full-size matching spare included
- X31 Off-Road Package — Rancho twin-tube shock absorbers, off-road suspension and skid plates
- Power retractable Black assist steps with LED lighting
- GMC MultiPro Tailgate — six functional load and access configurations
- Spray-on bedliner with GMC logo
- 12 fixed cargo tie-down points rated at 226 kg per corner
- Animated LED projector headlamps with LED daytime running lamps and IntelliBeam auto high beam
- Integrated LED fog lamps
- Animated LED signature tail, stop, turn and reverse lamps
- Power sunroof
- Deep tinted glass
- Power-folding vertical trailering mirrors — heated, auto-dimming, turn signals, puddle lamps and perimeter lighting
- High Gloss Black mirror caps
- Rain-sensing front wipers
- LED cargo bed lighting — activated by switch or key fob
- Perforated leather seats — Jet Black with Kalahari accents
- 10-way power driver seat with lumbar
- 10-way power passenger seat with lumbar
- 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" Premium GMC Infotainment System with Google built-in
- Wireless Apple CarPlay & Android Auto
- Bose 7-speaker premium sound system with Richbass woofer
- Adaptive cruise control
- Remote vehicle start system
- Wireless phone charging
- Wi-Fi hotspot capable
- Dual-zone automatic climate control
- 12.3" reconfigurable multicolour digital driver display
- Auto-dimming rearview mirror
- Universal Home Remote
- 120V AC power outlet — instrument panel and bed mounted
- Premium floor liners front and rear
- X31 Off-Road Package — Rancho twin-tube shock absorbers
- Short/long arm front suspension with torsion bars
- 3-stage multi-leaf rear suspension
- Electronic two-speed AutoTrac transfer case with push button control
- Driver-selectable auto-locking rear differential
- Hill descent control and hill start assist
- Skid plates — oil pan, front axle and transfer case protection
- Ground clearance: 284 mm
- Digital Variable Steering Assist — auto-adjusts to speed and conditions
- 4-wheel disc brakes with DURALIFE rotors
- Fully-boxed hydroformed frame
- Red recovery hooks
- Maximum towing capacity: 9,072 kg
- 5th wheel hitch capacity: 9,661 kg
- Front axle rating: 2,540 kg
- Rear axle rating: 3,288 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, 4-pin, 5th wheel and gooseneck wiring provisions
- Electronic trailer sway control
- Diesel exhaust brake
- 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
- Trailer side blind zone alert
- 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 heavy-duty trucks available on the Australian market — combining serious towing performance, off-road capability and premium comfort in one package.
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