Did all Chevy hhr come with aluminum control arms ? I got a guy telling me that some ls come with steel arm and told him bs ..

 

You are right - they all came with those cast aluminium control arms. The steel ones "fit" but were designed for the Cobalt's if I remember right.
Installing the steel ones may not stand up to the addition weight or whatever of the HHR.

 

OK & a Happy New Year.