Where is the fuel line located on a 2003 Saturn Vue?

The fuel line on a 2003 Saturn Vue is located underneath the vehicle, running from the fuel tank (located in the rear, typically near the passenger side) towards the engine compartment. It's protected by the undercarriage. You will not see it easily without getting under the vehicle.

To be more precise, you'll need to consult a repair manual specific to the 2003 Saturn Vue. These manuals show detailed diagrams of the fuel system and its components. You can find these manuals online (some are free, others are paid) or at auto parts stores. Improperly working with fuel lines is dangerous, and a repair manual is crucial for safety and accuracy.