Truck vibrate badly, Help!

when i get up to 70mph my truck just starts to shake horribly. i went and got my tires rotated and balanced, but the problem is still present. i checked all my joints and they look fine does anybody have any idea what could be the cause of this?

 

are all the lug nuts tight ? are you certain they balanced the tires properly ? did it already throw the weights they put on ? some places use the stick on weights and they don't always stick and if the guy didn't put the old style ones on right the can come off also or is it possible one of the tires has steel belts slipping internally ? look for lumps twist ect.. in the tire itself rub your hand over it all the way around it see if it feels abnormal any bent rims ?? aside from that you may have a bigger issue thats just what I could think of at the moment

 

Just turn down the radio, dude. My truck vibrates a lot less when I do.