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2026 GMC Sierra 3500HD AT4
Pickup Truck
Make
GMC
Model
Sierra 3500HD
Trim
AT4
Year
2026
Mileage
16 kms
About this item
Experience the power and capability of the 2026 GMC Sierra 3500HD AT4, a diesel-powered 4x4 crew cab designed for demanding work and rugged adventures.
This heavy-duty truck features a Duramax 6.6L turbo-diesel V8 engine delivering an impressive 470 hp and a massive 975 lb-ft of torque, paired with a smooth 10-speed automatic transmission. The 4-wheel drive system with locking/limited slip differential ensures optimal traction on any terrain. The Sierra 3500HD AT4 is equipped with a gooseneck/5th wheel prep package, including a hitch platform and bed-mounted 7-pin trailer harness, making it ideal for towing heavy trailers with ease.
Inside, the crew cab offers premium leather bucket seats with heating, cooling, and adjustable lumbar support for both driver and passenger, plus seat memory for added convenience. The rear bench includes heated seats and a pass-through for versatility. Technology is front and centre with a 15-inch multicolour head-up display, rear camera mirror, and a comprehensive safety suite featuring blind spot monitoring, lane departure warning, front collision mitigation, and adaptive cruise control.
The exterior is rugged and functional with power-retractable assist steps with LED lighting, integrated tailgate step, bed liner, and off-road tires on aluminum wheels. All-weather floor liners with the AT4 logo protect the interior, while power folding mirrors and roof marker lamps complete this capable package.
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