Things added to the outside of the vehicle can affect the airflow around it. This can cause wind noise and can affect fuel economy and windshield washer performance. Check with your dealer/retailer before adding equipment to the outside of the vehicle.
Doing Your Own Service Work
FuelChevrolet Cobalt Service & Repair Manual. Fuel Pump, Replace
Removal
1.
Relieve fuel system pressure as outlined
under "Precautions."
2.
Drain fuel tank.
3.
Raise and support vehicle.
4.
Disconnect connector and remove fuel
...