2025 Chevy Silverado 2025 Hd Duramax Diesel Engine. Chevrolet has made big improvements to the 2025 silverado hd 6.6 duramax. Power retractable assist steps with perimeter lighting, $1500;
Affected chevy silverado and gmc sierra trucks are equipped with the 6.6l. The 2025 chevrolet silverado 1500 maxes out at 13,300 pounds of towing.