Chevrolet 2009 Cobalt Owner's Manual page 29

Pull up on the latch plate to make sure it is secure.
If the belt is not long enough, see Safety Belt
Extender on page 1-30.
Position the release button on the buckle so that
the safety belt could be quickly if necessary.
5. If equipped with a shoulder belt height adjuster, move
it to the height that is right for you. See "Shoulder
Belt Height Adjustment" later in this section for
instructions on use and important safety information.
6. To make the lap part tight, pull up on the
shoulder belt.
It may be necessary to pull stitching on the safety
belt through the latch plate to fully tighten the
lap belt on smaller occupants.
To unlatch the belt, push the button on the buckle.
The belt should return to its stowed position.
Before a door is closed, be sure the safety belt is out of
the way. If a door is slammed against a safety belt,
damage can occur to both the belt and the vehicle.
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