A whine or hum may come from a transmission component, but wheel bearings, differentials, tires, and engine-driven accessories can make similar sounds. Sound can travel through the vehicle, making its source difficult to identify by location alone.
Note whether the noise follows engine speed or road speed, changes during a shift, or appears only under acceleration. Also mention whether it occurs while the vehicle is stationary.
Share those observations with Certified Transmission at 2112 West Broadway in Council Bluffs. A noise description is a starting point for diagnosis, not proof of internal transmission failure.