In my case, upon close inspection, the tie rod ends and bushings were worn out, completely. I also found that the ball joints also needed replacement. Everyone kept talking about the rotors being bad. Nope. I knew it was a different kind of shake. The whole front end would shake back and forth upon braking. Normally with warped rotors you will feel the brake pedal pulsing and feel the shake come through the steering wheel. The worse the rotors warp the more the pulsing and shaking. Mine was more of a side to side shaking. I checked the wheel bearings first. I jacked up the passenger side of the truck and turned the wheel side to side as well as checking for excessive movement top to bottom. With each movement of the wheel and tire you could see all of the play in the bushings and joints. I replaced the complete tie rod and ends as well as the ball joints. Then I proceeded to replace both the pitman arm and bushing as well as the idler arm and bushing. Basically, I have a whole new front end less the steering box. The rotors and wheel bearings checked out to be just fine.