AdAvailable Duramax® 3.0L Turbo Diesel, With Estimated 305 Horsepower & 495 lb-ft Torque. See the World's First 6-Function GMC MultiPro™ Tailgate, Available on the 2025 GMCSierra.
Models: Sierra 1500 AT4, Sierra 1500 AT4X, Sierra 1500 Denali, Sierra 1500 Elevation
