driving the 94 gsr around and i step on the brakes at a stop sign and the brake pedal sinks all the way to the floor and the brakes don't work at all till im pressing it as hard as i can. for the rest of my drive this keeps up at random times works fine then acts up again so i get home tell the parents and they take it over to the dealer the next day. well we get it back and the dealer installed new rotors and i think pads charged 600 for it my parents are all pissed they say i wore down the brakes twice as fast as they should have. well i get it out the next day and it's still doing the same damn thing. anybody ahve any suggestions as to waht this is nething could help.