If your "clunk" isn't coming from the bumper cover, check your sway bar end-links. Mine went bad at 20k miles, and now at 65k I need to do it again. I have yet to find links with grease zerks. The Dodge neon/PT had the same issue.

 

I see your up in Alaska but, you could not find these?
the new style has the zerks at an angle into the head of the link like in the above picture much easier to grease.
Your local parts palaces should have these or order up a pair from Amazon or EBAY

Moog K750012 are the correct length for the LS and LT suspension

Front Sway Bar Endlinks - Chevrolet HHR - MOOG-K750012

 

But note that almost all brands use the Moog part number, so you have to specify brand.

 

The Advance Auto Parts brand have zerks, not Moog but greasable.