Check the fluid again. Make sure you have enough fluid. The buzzing is definitely the front pump. Once you have check the fluid, remove the return cooler line and check for cooler flow. You should have about 1.8quarts per minute. If you find you have correct cooler flow then put a pressure gauge on the transmission and make sure line pressure is correct.

If cooler flow is not correct then you have a restriction in your cooler lines.

If line pressure is low then your pump is bad, or there is a problem with your pressure regulator valve.

 

Thanks MonteC will look into it