I seemed to have the same problem with my 04. I had the driveline relaced under warranty due to the clunking noise. The car now does not seem like it is bottoming out anymore. Car drives alot better. The car is warrantied 6 year or 70000 miles drive train.
:) Hi all. Just had the drive line replaced in my gx 470 because of the infamous clunk. They changed just the drive line and not only did the clunk go away but it use to bottom out in the rear suspension over some bumps which also sems to be gone. The car seems to drive better. It was done under the power train warranty 6 years 70000 miles.