Here's a general outline. Specific steps might vary slightly depending on your truck's configuration (engine, cab style, etc.). Consult a repair manual specific to your 1998 Chevy S-10 for detailed instructions and diagrams. This is crucial to avoid mistakes.
1. Safety First:
* Disconnect the negative battery terminal.
* Ventilate the area well. Gasoline fumes are highly flammable and dangerous.
* Wear safety glasses and gloves.
* Have a fire extinguisher nearby.
2. Preparation:
* Gather your tools: This will likely include sockets (various sizes), wrenches, screwdrivers (Phillips and flathead), fuel line disconnect tools, a fuel pump removal tool (often a specialized socket or straps), jack stands (if lifting the truck), safety glasses, gloves, rags, and a new fuel pump (ensure it's the correct one for your vehicle).
* Locate the fuel tank: It's usually located under the bed of the truck.
* Lower the fuel tank: This usually involves lowering the fuel tank straps. You might need to disconnect the fuel filler neck, fuel lines, and electrical connector from the tank. This step often requires loosening and lowering the tank, sometimes requiring a jack and jack stands for support. Consult your repair manual for specific procedures and safety precautions. Some trucks require dropping the bed slightly to get better access.
* Reduce Fuel Level: This is extremely important. A nearly empty tank is significantly safer and easier to work with. You may even want to siphon out the remaining fuel as a further safety measure.
3. Fuel Pump Removal:
* Access the fuel pump: Once the tank is lowered, you'll need to access the fuel pump assembly, often located under a cover on the top of the tank.
* Disconnect the fuel lines: Use appropriate fuel line disconnect tools to carefully remove the fuel lines from the pump. There may be pressure, so carefully release it by following the procedures in your manual. Be ready to catch any spilled fuel.
* Disconnect the electrical connector: Unplug the electrical connector from the fuel pump.
* Remove the fuel pump: This often involves using a special fuel pump removal tool. The pump may be held in place by a retaining ring or a series of clips. Your repair manual will guide you through this step.
4. Fuel Pump Installation:
* Install the new fuel pump: Carefully follow the instructions on the new pump and your repair manual. Make sure the pump is properly seated and aligned.
* Reconnect the electrical connector: Securely connect the electrical connector.
* Reconnect the fuel lines: Carefully attach the fuel lines, ensuring a tight and secure connection.
* Reinstall the fuel pump assembly cover.
* Raise the fuel tank: Securely reinstall the fuel tank to its original position. Connect all fuel lines, filler neck, and electrical connections.
5. Final Steps:
* Reconnect the negative battery terminal.
* Check for leaks: Carefully inspect all connections for any leaks.
* Prime the fuel system: This may involve turning the ignition key several times (without cranking the engine) to allow the fuel pump to prime.
* Start the engine: Listen for any unusual noises. If everything is okay, the engine should start.
* Check for leaks again.
Disclaimer: This is a general overview. Improperly replacing a fuel pump can lead to serious damage to your vehicle or even injury. Always consult a repair manual specific to your 1998 Chevy S-10 before attempting this repair. If you are not comfortable performing this repair yourself, take your vehicle to a qualified mechanic.
