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. Power Windows
WARNING:
Leaving children in a vehicle with the keys is
dangerous for many reasons, children or others
could be badly injured or even killed. They could
operate the power windows or other controls or
even make the vehicle move. The windows will
function and they could be seriously injured or
...