Clunking in the front end of my HHR

Ensure all connections of motor mounts and transmission mounts are secure, and that they are not broken. Of course the subframe, steering and suspension components should be checked. Nothing to guess at really from here -- hands on inspection is the only possible thing that will resolve your concern. I know you're saying the vehicle has been on a hoist - so - what has been done to duplicate the concern and narrow down the cause? A good technician, if hearing the noise, will not just give up. www.repairpal.com/repair-shops