Chevrolet 2009 Cobalt Owner's Manual page 281

5. To remove the filter cover, unlatch the clamps,
then pull up on the front and pull out.
6. Remove filter and inspect or replace.
Wipe all dust from inside of the housing and inspect
the air cleaner and air outlet duct for cracks, cuts,
and deterioration. The air outlet duct must be
replaced if damaged.
7. Reinstall the filter cover and latch the clamps.
8. Reattach the air outlet duct and tighten the screws
on the clamps that hold the duct in place.
9. Reconnect the air flow sensor electrical connector.
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