This HHR i bought has about 168000. I replaced the motor, trans, all shocks, sway links and sway bushings and also the front control arm bushings. I'm still getting a slight clunk up front and in the rear. Im thinking the front might be a motor mount or the intermediate steering shaft but not sure what the rear is. Could it possibly be the rear axle bushings? Are these a common thing to be replaced?

Thanks
Ken

 

could be rear hub bearings or the rear cradle arm bushings for the rear suspension

 

They are easy to see, but I don't remember anybody mentioning actually replacing them. There is what seems like a chapter in the Service Manual on replacing them.