Hi, question, Will the tpms from my 2010 hhr fit rims I bought from a 1999 Cadillac Catera ??? Thanks

 

They don't attach to the rims. They attach to the valve stems, stems come in rubber or metal, but they are "special" in that they have a threaded bit for the screw to go into.

Your old ones will unscrew from the stems and just switch over.

 

Thanks for the quick response.
Greatly appreciated.