So just in the past week my suburban has began to constantly sound like im about to take off like an airplane every time i punch the gas on the highway. At first I thought it was just a bad fan-clutch so i replaced that today and I am clueless on what is causing the loud roaring, as I still have the loud roaring even after replacing the fan clutch. Any ideas on where to look next to find what is causing the roaring? Could it possibly be something seizing up and causing extra work on the engine? I am leaving for Nebraska next week so I am trying to get this fixed so i dont have to worry about something happening while i am taking the suburban on a trip.