Purchased my 2008 Toyota Tundra new in December of 2008. I joined the forum to learn more about an issue I am having with a growling noise coming from the rear axle. It has been going on for about 7k miles. My powertrain warranty is about up. From research on this site, it sounds like it could be related to TSB-0151-10. Through joining the site, I was able to get a copy of this TSB, and it describes my problem to a tee. I am taking the truck to the dealership in the morning for diagnosis.