The tire sealant and compressor kit is located in the trunk.
1. Open the trunk. See Trunk.
2. Lift the trunk liner.

3. Remove the retainer that holds the tire sealant and compressor kit.
4. Remove the kit from the foam container.
To store the tire sealant and compressor kit, reverse the steps.
Tire Sealant and Compressor Kit
Changing a Flat TireChevrolet Cobalt Owners Manual. How Does an Airbag Restrain?
In moderate to severe frontal or near frontal collisions,
even belted occupants can contact the steering wheel
or the instrument panel. In moderate to severe side
collisions, even belted occupants can contact the inside
of the vehicle.
Airbags supplement the protection provided by safety
belts ...