I got a 2004 gmc duramax.i got this problem for 3 weeks, when i am pushing the brake is vibrating is bad when is 120 km / hour you guys think are the rotors?

Yep. Whens the last time you had the brakes inspected?

i didnt inspect from the time i bought it?august 2005. i put 35000 km on it.

Only thing I can suggest is going to a brake shop....

Mine will nearly yank the steering wheel out of my hands once the brakes get nice and warm (about 3 or 4 "eager" stops).

I suggest a brake shop as well. May be able to turn them, but maybe have to replace.

you think are the rotors. maybe they get to hot.

can i live them for now withou gatting more damage?

Is it intermittent, or all the time. Also try rotating your tires, could be a separated belt. Mine did they same thing until I got new tires. I would exhaust your resources before taking it anywhere. If it ain't broke, they will break it.

When just braking and every time you brake you feel it, It's most likely the rotors. In my opinion they take a long time to stop and they can't be fixed. And if your still not sure you want to spend the money, pull one and set it on a flat area and teeter totter it. Then you will see how they are warped. Just my 2 cents...
Jerry

I just purchased 2 brake rotors from Advanced Auto Parts for $56 each and plan on doing the rotor swap when I get off of work tonight. I'm thinking the pads will be OK since I only have 80,000 miles on them. Looks like a easy procedure from the post listed below:

http://dieselplace.com/forum/showthread.php?t=71798&highlight=hub

You might even have a hub problem that is causing the vibration.

is it intermittent, or all the time. Also try rotating your tires, could be a separated belt. Mine did they same thing until i got new tires. I would exhaust your resources before taking it anywhere. If it ain't broke, they will break it. i just put new tires in february. It is intermitent specialy when i slow i feel it how the tires rotate te slowly intermitent.thanks