There are basically two issues you are referencing: the "drone/vibrtation" issue and the "whine"....... the whine thing is actually normal for the new 8spd trans/transfer case combo in the lower gear levels.....it is not something "wrong" it is just the mechanics of the system in those lower gears.....at cruise and/or higher gears it's not there. Personally, I don't mind it ....but then I like the sounds of the engine, etc. ....gives me a sense of the power and ability of this truck! Now the "drone/vibration" thing, to the extent that some are experiencing it.....would NOT be pleasant! From my limited knowledge of physics...what appears to be happening is actually a "harmonic resonance" issue which will create not only a sound but a "feel" and/or sense of "pressure" particularly to the human ear. It can be caused by many different things....from an open window to any mechanical or structual vibration that causes a repetitive sound wave action. Apparently GM engineering is or has been working to locate the source......to what degree of success is not known.....but my vehicle was made in early December and I can detect that the resonance is "right on the edge" of happening, but never does....and, I wouldn't even know that it WAS an issue if I hadn't read about here in the forum..... The fact that mine does not get going into the "full blown" issue that some others have had would lead me to believe that they have taken some steps to modify or diminish the issue. I DO feel some very minor vibration.....but frankly, i believe that it is part of accepting 22in wheels and low profile tires. That very minor vibration changes to almost nil as I change road surfaces and the tires warm up. Just my thoughts.....