What Makes the 2025 GMC Sierra 3500HD Denali Ultimate Special?

The 2025 GMC Sierra 3500HD Denali Ultimate is the powerful and capable pickup truck for big adventurers and go-getters. Whether you’re crossing the country or the campsite, this is the truck you can rely on, and it’s available now at Castle Rock Chevrolet. See what makes this new GMC pickup special with a drive at our dealership.

Powerful Engines

It all starts under the hood. In the 2025 GMC Sierra 3500HD Denali Ultimate, you’ll have two competitively powerful engine options to pick from. A 6.6-liter V8 engine produces 401 horsepower and 464 lb-ft of torque. For even more power when you need it most, check out the 6.6-liter Duramax® Turbodiesel V8 engine that produces up to 470 horsepower and 975 lb-ft of torque.

Towing and Hauling

All that power means real-world capability. In the 2025 GMC Sierra 3500HD Denali Ultimate, you’ll have a conventional trailering rating up to 20,000 lbs and maximum available GCWR of 40,000 lbs. It also comes with up to 6,088 lbs of payload strength, and high-tech towing features like adaptive cruise control with trailering and integrated trailer brake controller.

Off-Road Features

No matter where the next adventure or big build might lead, the 2025 GMC Sierra 3500HD Denali Ultimate will get you there in safety and comfort. These are just some of the off-road features it offers:

• Four-wheel drive
• StabiliTrak™ electronic stability control system with traction control
• Automatic locking rear differential
• Available off-road suspension
• Available hill descent control

Test-Drive the 2025 GMC Sierra 3500HD Denali Ultimate

These are just a few of the reasons the 2025 GMC Sierra 3500HD Denali Ultimate stands out from the pack. When you’re ready to experience them all firsthand, Castle Rock Chevrolet is ready to help. Visit our dealership to take the first of many exciting drives.