When i go at higher speeds and apply the brake a little hard, sometimes it starts rattling a little bit. Is that normal?? I haven't done any big modifications to it.

 

Is it a shake in the front end or pedal or both? Is it pulsating, vibrating, or a rattle?

Try to be as specific as you can about the noise and its location.

 

probally warped rotors

 

Rattling might not be the best choice of words. Like the pedal doesn't vibrate or anything as far as i could tell. But the whole truck seems to vibrate. The steering wheel does, i can see the windsheild wipers do it during they day, and i can feel it in the seat. I checked and it mostly does it at 40 mph or higher, the faster the worst.

 

I agree... May consider having ur rotors turned

 

Yep warped rotors.

 

That Is what I would think.

 

Ok, thanks guys.

 

From my experience, I would consider just buying new rotors for both front and back. By the time my rotors war warped there wasn't enough meat left to even making turning them worth it.

 

^ that