One problem related to gas tank strap has been reported for the 2003 Toyota Tundra. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Toyota Tundra based on all problems reported for the 2003 Tundra.
As I was traveling at a slow speed when I became aware of a loud grinding noise which had suddenly began as I turned onto a side street. I stopped vehicle immediately and got out to investigate what was causing the noise. I discovered that my fuel tank was dragging beneath the truck. The metal straps that held tank to frame had rusted thru causing tank to fall to road surface. All the connections to fuel tank were ripped from tank. Toyota is worried about the spare tire falling down do to rusted frame members but I feel they should be more worried about their fuel tanks falling off. If I had been traveling at highway speeds I hate to think of what consequences might have been.