I did not see a posting about suspension noise in the forum.
Has anyone in here heard of the suspension noise in other forums? If not read ahead.

I have a 2007 Sonata SE 3.3L engine 1,450 miles.

Thumping noise mostly from the rear suspension. Mostly heard over 20 mpg while hitting bumps. If you have a car
full of people the sound appears gone. Someone posted a fix in another forum with the part number "55311-3K051 plus brackets".

http://www.hyundai-forums.com/

I am going to call the Hyundai Customer Affairs Office today. I already have a claim number assigned and see if
this is for real. There is no TSB so far that I know off.

Ed G