I found out tonight that there is a (silent?) recall on 2000-2003 Tundras for "excessive frame rusting."
You have until April 2012 to contact your dealer to have your frame inspected. If your frame meets the definition used in the recall for "excessive rust," Toyota will replace the frame on your truck at no cost to you. There is a caveat that any work required, not related to the frame will be billed, however. (Not sure what that means)
I also believe a rental in included in the frame replacement if approved.
Toyota Launches Tundra Frame Replacement Program | Tundra Headquarters
Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW