What causes emission leaks in my 2010 chevy cobalt

SOURCE: I have a 2006 Chevy Cobalt with the check engine

Did you get gas shortly before the light came on? It's not uncommon for a loose gas cap to set this code. Take the cap off and look at the seal. If it's cracked replace it with a new OEM cap. If not, reinstall it and make sure it's on all the way. Then you can clear the code and see if it comes back.

SOURCE: Chevy Cobalt Jump Start -

You do need to connect the ground lead to the battery. Connect the positive lead to the battery post, then connect the ground lead to metal bracket or chassis nut on the colt bolt. Then connect the positive to the other car and negative to the other car. Keep in mind, always connect the positive first and disconnect the positive last.

SOURCE: 2010 mini evap emission control system leak code 442

This is code for a small leak. You need a smoke test to find it. Call around to shop having this special tester.

SOURCE: What causes a 2010 Chevy cobalt to stall when releasing the clutch while in neutral.

Does it jerk when you release the clutch in neutral? Is so, what gear? try them all before responding.