I own a 2009 Cobalt XFE and for a month I had rough idle and the car would litterly buck between 25-45 mph.. The only code I got was bad camshaft position sensor.. Which I replaced twice thinking the first one was faulty but didn't solve my problem and no other forums had answers.. So I changed out the camshaft actuator solenoids and boom my car was perfect.. My video above explains how
