I have an 02 escalade ext im hering a humming with a vibration in the left front

What is your question?

at low speeds just a little sound then it goes away. but when i get it at highway speeds above 58 is when i get the humming vibration. sometime if i get off the gas it will go away untill the trans put torq back on. its seams to be getting louder and i feel in my feet when on the floor while driving not so much in sterring wheel.