A vibration that becomes noticeable during acceleration can originate from several parts of the drivetrain. Driveshafts, U-joints, CV axles, differential components and other rotating parts may all contribute to a vibration that changes with vehicle speed or load.
Because the location you feel the vibration does not always identify its source, inspection is important. Certified Transmission in Bellevue can evaluate the drivetrain and determine whether the differential or another component is responsible.