Here's a general outline. Specific steps may vary slightly depending on your vehicle's exact configuration, so consult a repair manual specific to your year and model Bravada. A Haynes or Chilton manual is a good investment.
1. Preparation and Safety:
* Disconnect the battery: This is crucial to prevent accidental sparks. Disconnect the negative (-) terminal first.
* Gather tools: You'll need jack stands, a jack, sockets (various sizes), wrenches, fuel line disconnect tools, safety glasses, gloves, shop rags, and possibly a fuel pump strainer removal tool.
* Obtain a new fuel pump: Make sure it's the correct one for your vehicle.
* Ventilation: Work in a well-ventilated area. Gasoline fumes are dangerous.
* Fire extinguisher: Have a fire extinguisher readily available.
2. Accessing the Fuel Tank:
* Raise the vehicle: Safely jack up the Bravada and securely support it with jack stands.
* Locate the fuel tank: It's usually under the rear passenger compartment.
* Remove fuel tank straps: These straps hold the tank in place. You'll likely need to loosen or remove bolts and possibly disconnect electrical connections.
* Lower the fuel tank: Carefully lower the fuel tank. You may need to support it with a jack or straps as you disconnect it.
3. Fuel Pump Replacement:
* Disconnect the fuel lines: Use fuel line disconnect tools to safely disconnect the fuel lines. Have rags ready to absorb any spilled fuel.
* Disconnect the electrical connector: Disconnect the electrical connector from the fuel pump.
* Remove the fuel pump access plate: This is a cover on top of the fuel tank that provides access to the fuel pump. It's usually held in place by clips or screws.
* Remove the fuel pump: This often involves removing a retaining ring or bolts. You may need a fuel pump strainer removal tool.
* Install the new fuel pump: Carefully install the new fuel pump, ensuring it's correctly seated and aligned.
* Reinstall the access plate: Secure the access plate.
* Reconnect the electrical connector and fuel lines: Ensure all connections are secure.
4. Reassembly:
* Raise the fuel tank: Carefully raise the fuel tank back into its position.
* Reconnect the fuel tank straps: Secure the tank.
* Lower the vehicle: Carefully lower the vehicle from the jack stands.
* Reconnect the battery: Reconnect the battery positive (+) terminal.
5. Priming the System:
* Turn the ignition key to the "ON" position (do not crank the engine): This should allow the fuel pump to prime and build pressure for a few seconds. You may need to repeat this several times. Some vehicles require cycling the key several times.
* Start the engine: Check for leaks and listen for proper fuel pump operation.
Important Considerations:
* Fuel Pressure: Some repair manuals suggest using a fuel pressure gauge to verify proper fuel pressure after installation.
* Fuel Pump Strainer: Replace the fuel pump strainer (sock) while you're at it. It's inexpensive and prevents debris from damaging your new pump.
* Professional Help: If you're not comfortable performing this repair yourself, take your vehicle to a qualified mechanic. It's a more involved job than it might initially seem.
This is a general overview. Always consult a repair manual specific to your 2000 Oldsmobile Bravada 4.3L for detailed instructions and diagrams. Safety is paramount; if in doubt, seek professional help.
