After 2 foot snow and riding on snow packed roads, rumbling noise from under car.

The traction control makes a rumbling noise when its activated, as does ABS braking. In the glove box is a switch to defeat traction control- try turning traction control off and see if the noise stops.

With all due respect, what the H___ are you doing driving in 2 Feet of SNOW? The rumbling noise you hear is most likely caused from Snow being impacted in the CV Joints, Wheel Wells and anywhere else from freezing in place after driving in the "Deep Snow". The solution is to have the care raised on a Hoist and Pressure Washed to remove all Snow and Ice from the the entire Bottom Side of the Vehicle. It then should be allowed to dry thoroughly in that building before being driven. Additionally, if any noises occur upon exiting that facility turn around and have it repaired before it costs you untold thousands of dollars to repair.

Next time you have "DEEP SNOW" wait until the Roads have been cleared, salted or sanded and are back down to pavement before driving on them.