I installed a set of after market rotors and pads about 9 months ago. everthing was fine and no problems... today the brakes were pulsating, so I had them turned and reinstalled on the HHR, now the pulsating is WORSE!!
Anybody know what is the solution to this problem?

 

Sounds like rotors . Some after mkt. rotors won't last 10,000 miles.

 

Have you checked them for 'run-out' ?
or wheel bearings for excessive endplay ?