Good Lord, did you read that repair manual for fixing the noise for the 70mph+ issue? I've got the sister version, an 05' 4runner V8, and it too has the clunk and the droaning noises "I actually like it though, sounds muscular", but I didn't pay what you guys paid for the Lexus version, so I'm not quite as sensitive to it. But, man oh man, that second repair for the 75mph fix, looks intense, and if you're out of warranty, way too expensive to mess with. The 55mph fix seems easy enough, just a different mount. But the other one, with all the digging you have to do, no way jose'. If I had a GX out of warranty, and wanted this repair, then I'd simply trade the GX for one that was in warranty, and then fix that one. That repair has got to cost around $2k all-in!
ok so i took my GX in for repairs today, but with the OLD TSB in hand. the clunk i have actually originates from right under the brake, and is prominent when stopping and pressing on the brake. so it seems that i got work done for a completely different problem. problem is, i still have the clunk under the brake, and am afraid they might have used outdated parts to repair the "rear clunk". i have to schedule another appointment with lexus first thing tomorrow, so i'll keep you guys updated. when parking my car at my apartment, i noticed a terrible grinding noise when easing up on the brake. i don't know if this is normal, but i'll have to bring this up with the Lexus technician asap.
anyone else have the clunk originating from under the brake? thanks.