* 4.8L Vortec V8: This was the base engine and produced 285 horsepower.
* 5.3L Vortec V8: This was a more powerful option and offered 295 horsepower.
* 6.0L Vortec V8: This was the most powerful option and produced 325 horsepower. It was available in the "2500" series of the Suburban, which had a higher towing capacity.
To tell which engine you have, you can check the vehicle's identification number (VIN) or consult the owner's manual.