1. Park the Sunfire on a level surface and turn off the engine. Allow the engine to cool completely before proceeding.
2. Relieve the fuel pressure in the fuel system. To do this, locate the fuel pressure relief valve on the fuel rail and press the valve in with a screwdriver. You will hear a hiss as the pressure is released.
3. Disconnect the negative battery cable. This will prevent the engine from starting while you are working on the fuel pump.
4. Raise the rear of the Sunfire with a jack and jack stands. Make sure the Sunfire is securely supported before proceeding.
5. Locate the fuel pump access panel under the rear seat of the Sunfire. Remove the screws holding the access panel in place and lift the panel off.
6. Disconnect the fuel lines from the fuel pump. Use a wrench to loosen the nuts holding the fuel lines in place and then pull the lines off of the pump.
7. Disconnect the electrical connector from the fuel pump. Press down on the release tab on the connector and then pull the connector off of the pump.
8. Loosen the mounting bolts holding the fuel pump in place. Use a wrench to loosen the bolts, but do not remove them completely.
9. Lower the fuel tank and remove the fuel pump. Once the mounting bolts are loose, you can lower the fuel tank and remove the fuel pump.
10. Inspect the fuel pump. Look for any signs of damage, such as cracks or leaks. If the pump is damaged, it will need to be replaced.
11. If the pump is not damaged, reinstall it in reverse order of removal. When reinstalling the fuel lines, be sure to tighten the nuts until they are snug.
12. Turn the ignition key to the "ON" position and listen for the fuel pump to run. The pump should run for a few seconds to prime the fuel system.
13. Start the engine and check for leaks. If you see any leaks, turn off the engine and tighten the fuel lines until the leaks stop.
14. Lower the Sunfire off of the jack stands and reconnect the negative battery cable.
