Why are Loud Noises Coming from Under My Car? While this can be a generic question with multiple causes, this direct occurrence was due to a failing Driveshaft. The Driveshaft Coupler needed replacement inside of a Corvette's Torque Shaft. A whole lot of big words with so many different responsibilities for allowing your vehicle to move. Let's get back to the basics...What is a Driveshaft anyway? A Driveshaft is part of the Drivetrain system, this is responsible for the drivability of your vehicle. There is something called Torque in an engine, which is the measurement of force that transmits the engine power to the Transmission. In this specific vehicle, the Driveshaft is a long round shaft that goes from the Engine to differential gears to the transmission that create torque and turn the wheels of the car. When the output shaft of the Transmissio ... read more