hello everyone,

I am having problems with my 05 grand prix vibrating...I can feel the vibration slightly on the steering wheel, but more on the foot pedals...I have gotten my tires balanced multiple times with no luck fixing the vibration. No body knows what it is and it's another irritating thing that I have to put up with. At high speeds (80) you can def feel it. mechanic says there are no bent rims, tires are in awesome condition, control arms are fine, and says that I have a busted outer tie rod. Also need back rotors/pads and pad/rotors cut in the front He says there is no play in the tie rod but the bushing is what I think he said is busted. He says it may make the car shake but not as much as i explained....WHAT the hell is it???? had the car 3 years...always vibrated but now it is very irritating!!!!!!!!!!!!!

Help please