Here's a general overview. This is not a substitute for a detailed repair manual specific to your 2003 Saturn Vue. Consult a repair manual (like a Haynes or Chilton manual) for detailed instructions, diagrams, torque specifications, and safety precautions. Those manuals will also specify any differences based on your engine type (2.2L or 3.0L V6).
Safety Precautions:
* Disconnect the negative battery terminal before starting any work.
* Work in a well-ventilated area. Gasoline fumes are highly flammable and can be dangerous.
* Do not smoke.
* Have a fire extinguisher readily available.
* Wear safety glasses.
* Use proper jack stands if you need to raise the vehicle. Never work under a car supported only by a jack.
* Properly dispose of used fuel.
General Steps (Consult your repair manual for specifics):
1. Prepare the vehicle: Raise and securely support the vehicle. Locate the fuel pump access panel, usually located under the rear seat or in the cargo area. Your repair manual will show you the exact location.
2. Disconnect the fuel lines: This is crucial and requires caution. You'll likely need fuel line disconnect tools to avoid damaging the lines. Before disconnecting, relieve fuel pressure in the system. This often involves running the engine until it stalls after disconnecting the fuel pump relay (check your manual for the relay location). After disconnecting, carefully plug the lines to prevent fuel spillage.
3. Disconnect the electrical connectors: Disconnect the fuel pump electrical connectors. Take pictures or make notes to ensure you reconnect them correctly later.
4. Remove the access panel: Remove the access panel to reach the fuel pump assembly. This often involves removing some bolts or clips.
5. Remove the fuel pump assembly: This is often a single unit containing the fuel pump, sending unit, and fuel level sensor. You may need to unbolt it and carefully lift it out. Be aware that some fuel might still remain in the assembly.
6. Replace the fuel pump: Install the new fuel pump assembly, ensuring it's properly seated and aligned.
7. Reconnect everything: Reconnect the electrical connectors, fuel lines, and the access panel. Double-check all connections.
8. Lower the vehicle: Carefully lower the vehicle.
9. Reconnect the battery terminal: Reconnect the negative battery terminal.
10. Check for leaks and start the engine: Check for any fuel leaks around the fuel lines and pump assembly. Start the engine and listen for any unusual noises. Check for proper fuel pressure using a fuel pressure gauge (if possible).
Important Considerations:
* Fuel pump straps: The fuel pump is often held in place by a retaining strap or ring. Make sure you properly install this to prevent the pump from shifting or becoming damaged.
* Fuel filter: While not directly part of replacing the fuel pump, it might be a good idea to replace the fuel filter at the same time.
* Sending unit: If the fuel gauge is malfunctioning, the fuel level sending unit might be faulty and needs replacing as part of the fuel pump assembly.
This is a general outline. Again, you absolutely must consult a repair manual specific to your 2003 Saturn Vue before attempting this repair. If you are not comfortable performing this repair yourself, it's best to take your vehicle to a qualified mechanic. Working on a fuel system requires precision and safety awareness; mistakes can be dangerous and expensive.
