The 2025 GMC Sierra HD is a powerful and versatile pickup. Its range of great features ensures it can stand out from the crowd
1. Powerful Performance
A 6.6-liter V8 engine with an Allison 10-speed automatic transmission provides the Sierra HD with a massive 401 horsepower and 464 lb-ft of torque. A fully boxed frame and StabiliTrak electronic stability control contribute to a smooth, steady ride. The standard Suspension Package ensures quality cornering.
For extra power, you can select the Duramax diesel 6.6-liter V8 engine, offering 470 horsepower with 975 lb-ft of torque. With this engine and other add-ons, it can tow up to 32,000 lbs.
2. Useful Bed
The durable, high-capacity bed inside the GMC Sierra HD offers plenty of utility and has the perfect height for optimized loading. The standard bed is 71.4 inches wide and 82.2 inches long, offering plenty of room for everything you need. 3,637 lbs of payload capacity ensures you can load up the bed with plenty of construction material, sports equipment, or furniture. LED lighting and a variety of tie-downs make the bed convenient to use.
3. Sharp Style
The GMC Sierra HD matches power and utility with an unforgettable style thanks to LED projector headlamps and 17-inch steel wheels or available 20-inch wheels. The gleaming chrome grille combines with bold colors like Volcanic Red Tintcoat or Titanium Rush Metallic. Available Smoked Amber LED roof marker lamps add a final touch of style.
4. Technological Brilliance
This pickup matches brains with brawn, thanks to the presence of advanced technology. The standard touchscreen is 8 inches wide, but you can upgrade to an available 12.3-inch diagonal color driver information center, offering easy access to all your infotainment needs. If you’re looking for an upgrade, the Premium GMC Infotainment System on the SLE and SLT trims is perfect for long drives.
5. Available Additions
If you want to go all out, there are many available additions, like Adaptive Cruise Control with trailering. For added visibility, you can opt for up to 13 camera views, helping you to avoid hazards as you drive. You can add plenty of additional comfort inside with available 10-way front seats and a heated steering wheel.
Are you ready to experience this American truck’s power and performance for yourself? At our dealership, you can ask all the questions you need or take a test drive. Pay a visit to Alexander GMC of Simi Valley today and get behind the wheel.


