Ok....now I have under 10,000 miles on my LTZ and the brakes are vibrating/shuddering AGAIN as if the front rotors are warped. It was perfect when it was new, and at under 3000 miles I had to take it in. The dealer did the front rotors and made a mess of my interior in the process. About 3000 miles after that it started again and this time the pedal was big time soft, so I took it to a different dealer since the one I bought it from had made such a mess of my interior. This dealer cut the rear drums and supposedly did the fronts too. Well...now its vibrating AGAIN without the pedal sinking. It feels like the front rotors again. When you start lightly applying the brakes at 50-55 mph it starts, but when you apply them harder it goes away. So I have not gone back to the dealer yet because I'm sure they will tell me that its not that bad or whatever. Gee...my GT500 has zero vibrations at any speed light or hard pedal, and my wife's MKX has no problem at any speed either. And this truck did not have this problem when it was new. I know darn well I could fix it myself by throwing new calipers and rotors at it. Thats what I had to do with my 2004 after repeated visits to the dealers with them saying "its not that bad...I've seen worse" and refusing to cover it on warranty. Any suggestions?