2002 GMC 2500 HD User Comment / Complaint

When i pulled into a left turn lane and tried to apply the brakes the pedal went nearly to the floor and i had no brakes luckily there were no other cars on the road or in the intersection at the time so i went on through and there was no accident, i was camping at the time and i got the truck back to the campground when i backed the truck into the campsite and applied the brakes they started working normally, i took the truck to the dealer and they said that they could find nothing wrong they even said that they have had several other vehicles do the same thing and could not find anything wrong with them and that this problem was normal for the vehicle.