if I had both p0010 and p0011 on a chevy HHR what is likely wrong.

Question

when idling it is rough when in  neutral not rough

Answer 1

P0010 Intake camshaft position actuator solenoid valve control circuit

P0011 Intake camshaft position system performance

This code is for the intake camshaft position solenoid, you would have 2  one for the intake side and one for the exhaust side, It is important that this code be resolved soon, The fix would require replacing the intake camshaft actuator , and as a suggested replace the exhaust side, The problem if this is not soon resolved you can short out its driver circuit in the ECM.