Hello all, I picked up a 3/4 ton chevy a couple weekends ago and it did'nt do it when I test drove it but when I got it out on the highway and applied the brakes the truck liked to vibrate apart. Took it home and heres what I did after taking it to NTB, replaced the idler and pitman, I could see they were very wobbly, Still did it, replaced the two brake lines to the callipar, still did it, applied the emergency brake to stop and it really did it so I replaced both drums, no shaking apliying the emergancy brake. Normal brake it was still there, replaced both rotors and new bearings installed. Still did it at highway speed not in town. Replaced both sets of pads and it is still doing it. If I appliy the brakes very gently on the highway it won't do it so bad untill I have to put some preasure on them. Still in town you can't hardly notice any vibration. Actually its more of a severe shake when it does it and you really can't feel it in the peddle and much as you can the steering wheel and the entire truck shakes. I'm lost here. Everything is tight on the front end, had the driveshaft checked, good, the rearend seems fine. Any thoughts on my next step??????????