Wheel bearing/hub assembly
it could be your tires on the pavement.
it does that because it has a generator which makes the engine makes these sounds
Take it to a mecanic.
I have heard that if you have papers or napkins in the glove compartment box they can get sucked into the air vent which then makes a humming noise that you can hear while driving and as you increase the speed the pitch of the noise gets louder.
it makes a growling sound
A hummingbird
id say type and size of tire, and if bearings are bad either or will make that humming sound.
A Humming bird Benefits from Drinking the flowers because the flower comes like food to the Humming Bird.The flower Benefits from the Humming bird because the humming Bird pollinates it.
Pascagoula river
The heater makes a humming sound.
Nectar makes up 90% of humming birds diets.
The 2001 Lesabre may have a bad wheel bearing. Check the bearings for all four wheels for a bad bearing.