Here's a general overview of the process. Remember, this is NOT a substitute for a proper repair manual:
1. Safety First:
* Disconnect the negative battery terminal. This is crucial to prevent electrical shocks and potential sparks.
* Work in a well-ventilated area. Fuel vapors are highly flammable.
* Wear safety glasses and gloves.
* Have a fire extinguisher readily available.
2. Preparation:
* Locate the fuel pump access panel. This is usually located under the rear passenger seat or in the bed of the truck (depending on the configuration). Your repair manual will show the exact location.
* Gather your tools. You'll likely need:
* Socket set (metric)
* Wrenches (metric)
* Screwdrivers (Phillips and flathead)
* Fuel line disconnect tool
* Fuel pump pliers (may be needed)
* New fuel pump (ensure it's the correct one for your vehicle)
* New fuel filter (recommended)
* Jack stands (if working under the vehicle)
* Shop rags
* Safety glasses
* Gloves
* Fuel pump installation kit (might be included with the new fuel pump)
3. Fuel System Depressurization:
* Start the engine and let it run until it stalls. This will use up the fuel in the lines.
* Use a fuel pressure gauge (if available) to ensure the system is depressurized. This is important for safety.
4. Accessing the Fuel Pump:
* Remove the access panel. This may involve removing seats, carpets, or other interior components. Follow your repair manual precisely.
* Disconnect the electrical connectors. Carefully disconnect the wiring harness from the fuel pump.
* Disconnect the fuel lines. Use the fuel line disconnect tool to avoid damaging the lines. Have rags ready to absorb any spilled fuel.
5. Removing the Fuel Pump:
* Remove the fuel pump retaining ring or bolts. The method varies depending on the model. Your repair manual will detail this step.
* Carefully remove the fuel pump assembly. This may be a single unit or multiple components.
6. Installation of the New Fuel Pump:
* Install the new fuel pump assembly in reverse order of removal.
* Connect the fuel lines securely.
* Reconnect the electrical connectors.
* Reinstall the retaining ring or bolts.
* Reinstall the access panel.
7. Testing:
* Reconnect the negative battery terminal.
* Start the engine and check for leaks.
* Listen for any unusual noises from the fuel pump.
* Drive the vehicle to ensure proper fuel delivery.
Important Considerations:
* Fuel pressure: After installation, it might be necessary to prime the fuel system. Your repair manual will detail how to do this safely.
* Fuel pump sock (filter): Often, the fuel pump assembly comes with a new sock filter. Always replace it.
Disclaimer: This is a general overview, and the specific steps may vary depending on your vehicle's model. Incorrectly performing this repair could result in damage to your vehicle or personal injury. Always consult a repair manual specific to your 1998 Suburban before attempting this repair. If you are uncomfortable with any part of this process, take your vehicle to a qualified mechanic.
