1. Gather Tools and Materials:
- Replacement fuel pump (check your vehicle's specifications)
- Fuel line disconnect tool
- Phillips head screwdriver
- Flat head screwdriver
- Socket wrench set
- Safety goggles
- Gloves
- Fuel-safe container
2. Safety First:
- Park your vehicle on a level surface and engage the parking brake.
- Make sure the engine is turned off and cool to the touch.
- Disconnect the vehicle's battery to avoid any electrical accidents.
3. Locate the Fuel Pump Assembly:
- Open the fuel door and remove the fuel filler cap.
- Look for a circular metal plate under the fuel door; this covers the fuel pump assembly.
4. Disconnect the Fuel Lines:
- Use the fuel line disconnect tool to disconnect the fuel lines attached to the fuel pump assembly.
- Place a fuel-safe container underneath to catch any spilled fuel.
5. Remove the Fuel Pump Assembly:
- Remove the bolts securing the fuel pump assembly to the fuel tank using the socket wrench.
- Be careful not to drop the bolts into the fuel tank.
- Once the bolts are removed, gently lift the fuel pump assembly out of the tank.
6. Replace the Fuel Filter (optional):
- If your Sonoma is equipped with an inline fuel filter, this would be a good time to replace it.
- It is usually located along the fuel line near the fuel pump assembly.
7. Install the New Fuel Pump:
- Place the new fuel pump assembly into the fuel tank.
- Secure it with the bolts you removed earlier.
- Reconnect the fuel lines using the fuel line disconnect tool.
8. Reconnect the Battery:
- Reattach the negative battery terminal you disconnected earlier.
9. Test the Fuel Pump:
- Turn the ignition key to the "ON" position but don't start the engine.
- You should hear the fuel pump running for a few seconds to pressurize the fuel lines.
10. Start the Engine:
- Start the engine and let it run for a few minutes to ensure that the fuel pump is functioning correctly.
11. Double-Check Connections:
- Double-check all connections to make sure they are secure.
Remember, if you are not comfortable performing these steps, it's best to take your vehicle to a qualified mechanic. Also, always follow the specific instructions provided in your vehicle's repair manual for your particular Sonoma model.
