I took it to the dealer and they said it's the rubber bushings in the differental.
The bushings shrink over time and that is causing the thump sound.
They said this is considered normal wear and tear and they won't cover it under warranty.
I'm not sure what to do at this point, and they said it's a very BIG repair job to change out the bushings with no guarantee the thump will go away.
It wasn't the spare tire, u-joints, or tranny mount.
What do you guys think?
It's very annoying, and i guess i have to live with the play in the differental.
They said i can go back to the dealer to have the mechanic test drive with me to make sure we're hearing the same sound after you hit the gas from coasting, but what's the use if they won't honor my warranty?
2001 GS300 with pre-owned certified warranty.