2026 GMC Sierra HD

The 2026 GMC Sierra HD offers a range of trim levels in addition to being offered in 2500 HD and 3500 HD models designed to cater to different needs and preferences. The Sierra HD comes in multiple configurations, allowing drivers to choose the right combination of luxury, capability, and performance. The base Sierra trim, the Pro, offers a Trailer Brake Controller and Trailering Mirrors, while the SLE has 17-inch wheels. On the SLT, you will find 18-inch wheels that have bold dark grey metallic accents. The off-road ready AT4 trim has gloss-black 20-inch wheels, and the AT4X has a factory-installed 1.5" suspension lift. On the Denali trim, there are chrome inserts with the stunning 20-inch wheels, and there are illuminated power assist steps on the Denali Ultimate.

The 2026 GMC Sierra HD offers two powerful engine options, each designed to deliver remarkable performance for every task. The standard engine is the 6.6L V8 gasoline engine provides impressive power. This engine offers plenty of power for most heavy-duty applications while delivering a smooth and reliable driving experience. For those seeking even greater capability, the 6.6L Duramax® Turbo-Diesel V8 engine is available, offering a staggering 470 horsepower and 975 lb-ft of torque.

When it comes to performance, the 2026 GMC Sierra HD is built to conquer challenges. With a towing capacity of up to 36,000 pounds when properly equipped for the 3500 HD, it is a top choice for those who need to haul heavy trailers or equipment. With advanced suspension systems, the Sierra HD offers stability and control, even under demanding conditions. Whether you're pulling a large boat or hauling a construction load, the Sierra HD ensures that power meets precision in every turn.

Inside the 2026 GMC Sierra HD, you’ll find a cabin designed for both comfort and functionality. The interior is spacious, offering generous headroom and legroom, especially in the crew cab configuration. The Denali and Denali Ultimate trims showcase the epitome of luxury, featuring leather-appointed seating and a refined overall atmosphere. The cabin also features an intuitive infotainment system, with an available 13.4-inch touchscreen and a premium audio system, ensuring that drivers and passengers enjoy an elevated experience during every ride.

The 2026 GMC Sierra HD offers a comprehensive suite of advanced safety features to keep you secure. These features include Forward Collision Alert, Lane Departure Warning, Automatic Emergency Braking, and more. For added peace of mind when towing, the Sierra HD offers Adaptive Cruise Control with Trailering and transparent trailer view, ensuring that drivers can safely navigate their surroundings with complete visibility. The 2026 GMC Sierra HD is a standout in the heavy-duty truck segment. With a perfect balance of power, performance, luxury, and safety, it is designed to tackle the toughest challenges while keeping the driver and passengers comfortable and secure.