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 Service & Repair Manual. Wheel R&R
1.
Raise and support the vehicle.
2.
Remove the wheel center cap, if equipped.
3.
Remove the wheel center cap nuts, if
equipped.
4.
Remove the wheel nuts.
5 ...