Tools and Materials Needed:
- Replacement fuel pump
- Fuel line fitting wrench
- Screwdriver
- Pliers
- Socket wrench set
- Safety glasses
- Gloves
Procedure:
1. Preparation:
- Park the vehicle on a level surface and engage the parking brake.
- Turn off the engine and allow it to cool down completely.
- Disconnect the negative terminal of the battery to prevent electrical accidents.
2. Locate the Fuel Pump:
- The fuel pump is usually located inside the fuel tank. In some models, it may be accessible through an access panel in the trunk or under the vehicle.
3. Remove the Fuel Lines:
- Use a fuel line fitting wrench to loosen and disconnect the fuel lines that are connected to the fuel pump.
- Be cautious, as there may be residual fuel in the lines, so have a container ready to catch any spills.
4. Remove the Fuel Pump Assembly:
- Remove any screws, clamps, or bolts that secure the fuel pump assembly in place.
- Gently lift and remove the fuel pump from the fuel tank.
5. Transfer Components (if Applicable):
- If the new fuel pump doesn't come with a fuel level sender or other components, transfer them from the old pump to the new one.
- Be careful not to damage any components during the transfer.
6. Install the New Fuel Pump:
- Carefully place the new fuel pump into the fuel tank. Ensure that the components align correctly.
- Secure the fuel pump assembly using the screws, clamps, or bolts that you removed earlier.
7. Reconnect the Fuel Lines:
- Reattach the fuel lines to the fuel pump and tighten them securely using a fuel line fitting wrench.
8. Electrical Connections:
- Reconnect any electrical connectors to the fuel pump. Ensure they are properly seated and secure.
9. Test the Fuel Pump:
- Reconnect the negative battery terminal.
- Turn the ignition key to the "ON" position but don't start the engine.
- Listen for the fuel pump to run for a few seconds. This indicates that the pump is functioning.
10. Start the Engine:
- Start the engine and let it run for a few minutes.
- Check for any leaks or unusual sounds coming from the fuel tank area.
11. Test Drive:
- Take the vehicle for a short test drive to ensure that the fuel pump is functioning properly and that there are no issues.
Remember that this is a general overview, and specific steps may vary depending on the exact model and year of your GMC Safari. If you are not comfortable performing this repair yourself, it is advisable to have it done by a professional mechanic.
