general problems of the 2001 GMC Yukon

When exiting my driveway I went down the street to the stop sign , when I applied the brake the peddle went to the floor and the truck did not stop. It was good that I wasn't going faster. When I took my truck ( youkon ) to the repair shop I explained the issue to the repair man. I got home and he called me back and asked me to return to the shop to take a look at the trucks problems. When returning to the shop the truck was lifted up and he showed me the brake lines and the gas lines that were corroded and needed to be replaced as soon as possible . He also explained the time and labor involved. I was surprised of how much labor and time was involved to repair these issues . He said the cost including parts and labor will be about 2,500. To 3,000. Dollars, that is if he didn't come across any other problems.