Conquer the Canadian wilderness with the 2025 GMC Sierra 3500HD AT4, where rugged capability meets refined design for the ultimate driving experience.

The 2025 GMC Sierra 3500HD AT4 is engineered for those who demand more from their truck. With its commanding 8-cylinder engine and Allison 10-Speed Automatic transmission, this powerhouse delivers exceptional performance and control, whether you're towing heavy loads or navigating challenging terrains. The 4x4 drivetrain ensures superior traction, making it ideal for Canada's diverse landscapes, from snow-covered roads to muddy trails. The Crew Cab configuration offers ample space for passengers and gear, providing both comfort and practicality for long journeys or workdays. The Summit White exterior exudes a bold presence, while the AT4 trim adds a touch of sophistication with its distinctive design elements. Inside, the Sierra 3500HD AT4 is equipped with advanced technology and premium materials, ensuring a luxurious and connected driving experience. From its intuitive infotainment system to its innovative safety features, this truck is designed to keep you informed and protected on every adventure. Experience the perfect blend of power, style, and functionality with the 2025 GMC Sierra 3500HD AT4, a truck that’s ready to tackle whatever the Canadian roads throw your way.