I changed the pcv valve cover yesterday and the check engine light still blinks, the stabili track message comes up, still idles rough, and still has less power.

What is your question?

Car still idles rough, less power, check engine light still blinks, and stabili track message and traction messages still come up.

What makes this problem better or worse?

Whenever I turn on the car

How long has your 2013 Chevrolet Cruze had this problem?

A couple weeks