The 2026 GMC Sierra 3500HD offers two exceptional engines to power your heavy-duty tasks. Let's take a closer look at these impressive powertrains and help you choose the perfect one for your needs.
6.6-liter V8 Turbocharged Diesel Engine
The Sierra 3500HD's available 6.6-liter V8 Duramax Turbodiesel cranks out a massive 470 horsepower and 975 pound-feet of torque. This B20 diesel-compatible powerhouse features direct injection and an engine block heater. Mated to a smooth-shifting 10-speed Allison automatic transmission, the Duramax diesel is ready to tackle your toughest jobs with ease.
6.6-liter V8 Gas Engine
For those who prefer a gas engine, GMC offers a potent 6.6-liter V8 with 401 horsepower and 464 pound-feet of torque. This naturally aspirated engine utilizes direct injection and variable valve timing for optimal performance. It's paired with a capable 10-speed automatic transmission for seamless power delivery.
Explore the GMC Sierra 3500HD Firsthand Today
Visit Brookings Auto Mall at 2323 E 6th Street in Brookings, SD, to experience the impressive 2026 GMC Sierra 3500HD firsthand. Our knowledgeable staff will help you find the perfect combination of engine, cab, bed, and drivetrain to meet your heavy-duty needs.
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