* 6.0L Vortec V8: This was the standard engine, producing 320 horsepower and 380 lb-ft of torque.
* 6.6L Duramax V8 Turbo-Diesel: This was an optional engine, producing 360 horsepower and 650 lb-ft of torque.
It's important to note that there might be slight variations in horsepower and torque depending on the specific trim level and transmission configuration. To get the exact information for your specific truck, you can check the vehicle identification number (VIN) or refer to the owner's manual.
