The 2024 GMC Yukon XL comes with a choice of two powerful engines - a 5.3-liter V8 with 355 horsepower and 383 pound-feet of torque or an available 3.0-liter Duramax Turbo-Diesel with 277 horsepower and 460 pound-feet of torque. Both pairs have a smooth-shifting 10-speed automatic transmission for optimal performance and efficiency.