Other Fuel System Tank Mounting problems of the 2005 Chevrolet Suburban

The fuel line that is on top of the gas tank rotted through. The brake and transmission lines rotted and leaked. The chassis is rotting in different places I have less than 77,000 miles on it since I bought new. I have a 1969 malibu that I've had since it was new and I keep it outside in all kinds of weather and not one part of the chassis is rotted. I don't know what kind of steel they use now to build these cars and trucks, but it should be unacceptable. I don't know the exact dates these things happened, but I do have all the repair bills for them. When the brake line rotted through I was going to the store and when I came to a yield sign the brake pedal whet to the floor. It's a good thing it happened then, because I live on a mountain and we have a road called breakneck and it is a 25% grade. It was raining the day that this happened and all I had was a little bit of foot brake and the emergency brake. I surely would have had a bad accident if I made it to that hill.