2009 Chevy cobalt base model 60k miles started running funny then shut off won't restart. Tried to start and makes knocking noise. Pulled codes and they are P0010 and P0013 both camshaft position actuators exagast and intake. Pulled exhaust sensor cleaned and put back in started car and it didn't knock and ran for about 5sec! Turned over a few more times good with no knock then it started again? My question is I read these actuators control oil flow could they be bad and not give the motor the oil it needs and cause it to knock? Sorry for the long post any help is appreciated!