AdDiscover All the 2025 GMC Sierra Has to Offer. View Options, Trims, and More at GMC.com. Available Duramax® 3.0L Turbo Diesel, With Estimated 305 Horsepower & 495 lb-ft Torque.
Models: Sierra 1500 AT4, Sierra 1500 AT4X, Sierra 1500 Denali, Sierra 1500 Elevation
