i found this through google
HHR has an intermittent P0010 and and even more intermittent p0013. This pertains to intake cam actuator circuit malfuction and intake cam angle performance (not suprisingly) respectively
Originally Posted by mikiec
My 06 is showing a P0010 code. Check engine light came on and the Tranny started hard shifting.
I have read up on the code but have no idea how to perform the checks.
Any help would be appreciated.