2. Faulty torque converter. The torque converter is a fluid coupling that connects the engine's crankshaft to the transmission's input shaft. If the torque converter is faulty, it can cause the engine's power to pulsate, which can cause the car to shake.
3. Broken or damaged driveshaft. The driveshaft is the rotating shaft that connects the transmission to the rear axle. If the driveshaft is broken or damaged, it can cause the car to shake when it is in reverse.
4. Bad wheel bearing. A wheel bearing is a device that allows the wheel to rotate freely. If a wheel bearing is bad, it can cause the wheel to wobble, which can cause the car to shake.