Whine From Gas Tank Area

Well your fuel pump is in the tank, and the whining is from the fuel pump, mine does it when the rpms are low and its starting to bog down going up a hill and needs to downshift or when it has shifted into overdrive and im not giving it a whole lot of gas because im at the cruising speed i want to be at. Not sure if this is supposed to happen but when i bought my car the pump had to be replaced and its done this ever since so it might be an announce we have to live with. i doubt air leak also because i would imagine it would throw a code plus it only does it when its under load and needs to downshift for me