2025 GMC Sierra HD Release Date

Power and Performance

The 2025 GMC Sierra HD is engineered to handle the heaviest loads with ease. Equipped with two powerful engine options, it offers unparalleled capability:

• 6.6L V8 Gas Engine: This standard engine delivers 401 horsepower and 464 lb-ft of torque, providing plenty of power for daily tasks and light-duty towing. Paired with a six-speed automatic transmission, it ensures a smooth and reliable performance.
• 6.6L Duramax Turbo-Diesel V8: For maximum capability, this engine delivers an impressive 470 horsepower and a staggering 975 lb-ft of torque. Mated to an Allison® 10-speed automatic transmission, it provides seamless power delivery for heavy towing and hauling.

With a maximum towing capacity of up to 36,000 pounds when properly equipped, the Sierra HD is built to take on any challenge, whether you're hauling equipment in Franklin or towing a camper through the hills near Titusville.

Safety and Technology

The 2025 GMC Sierra HD is loaded with state-of-the-art technology to keep you connected and safe. Whether you're navigating through Hermitage or towing heavy loads near Reno, you'll appreciate these advanced features:

• GMC Pro Safety: Standard on all trims, this suite includes automatic emergency braking, lane-keeping assist, and forward collision alert for added peace of mind.
• Enhanced Trailer View System: Multiple camera angles provide clear visibility of your trailer and surroundings, simplifying tough maneuvers.
• Advanced Infotainment: With an available 13.4-inch touchscreen, wireless Apple CarPlay, and Android Auto, staying connected on the road has never been easier.
• Super Cruise™: Available on select trims, this hands-free driving system offers convenience and safety during long highway trips, perfect for travel through areas like Titusville or Franklin.