Using Scan Tool
WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Connect scan tool to data link connector located under left side of dash. Start vehicle. Turn scan tool on and locate SPECIAL FUNCTIONS. Select POWERTRAIN, then select FUEL SYSTEM. Select FUEL PUMP, then command fuel pump Off. engine will die in 3-5 seconds. After engine dies, turn ignition off.