2025 GMC SIERRA HEAVY DUTY MODEL REVIEW - Scottsdale, AZ

What's New for the 2025 GMC Sierra HD?

GMC's Sierra Heavy Duty series offers both 2500 and 3500 models. Whichever you opt for, you'll be driving an iconic favorite among American truck enthusiasts. For 2025, GMC keeps the overall design consistent but introduces some new features, like available front and rear parking sensors on the base Sierra HD. Higher trims such as the Denali and AT4 now come with standard trailering assist.

What Are the 2025 Sierra HD Trims & Features?

The 2025 Sierra HD comes in various trims: Pro, SLE, SLT, AT4, Denali, AT4X, and Denali Ultimate. Built for the toughest jobs, each trim showcases the Sierra's signature capabilities. The SLE base model offers a traction selection system with tow/haul mode and includes a 13.4-inch diagonal center touchscreen for easy control of safety and towing cameras. Moving up, the SLT trim brings added luxury with standard 10-way power-adjustable front seats. The highlight of this year's lineup is the Denali Ultimate, featuring a powerful 6.6L turbo-diesel V8 engine, Alpine Umber full-grain leather seats, and a bold Vader Chrome grille. All trims boast the distinctive "tall and square" front end, making the Sierra HD stand out on the road.

How Much Horsepower Does the 2025 Sierra HD Have?

The new Sierra HD comes with two engine options. The standard V8 gas engine produces 401 horsepower and 464 lb-ft of torque. There's the Duramax 6.6L V8 for more power, delivering 470 horsepower and 975 lb-ft of torque. Both engines are paired with an excellent 10-speed automatic transmission, with the turbo-diesel's transmission Allison-certified.

What Safety Features Does the 2025 Sierra HD Include?

GMC takes safety seriously with the Sierra HD, packing it with advanced features. Automatic emergency braking, forward collision alert, and Teen Driver are standard on all trims. Higher trims offer additional protection with rear cross-traffic alert, lane change alert with side blind zone alert, and optional front and rear park assist.

Visit Us in Scottsdale Today

The remarkable 2025 Sierra HD is waiting for you at our Scottsdale dealership. Stop by to see it in person, or contact us to learn more about this powerful truck.