* Dropping the fuel tank: This is generally considered the more common and sometimes easier method, especially if you're comfortable working underneath the truck. You'll need to disconnect the fuel lines, electrical connections, and the tank straps before lowering it. Safety is paramount here – make absolutely sure the system is depressurized before working on it.
* Removing the bed: This involves removing the truck bed entirely to access the tank from above. While it might seem less awkward than working underneath, it requires significantly more work and is usually only preferred if you're already doing other bed-related work.
Which method is easier?
For most people, dropping the fuel tank is the easier method. Removing the bed is a much more involved process that requires more tools and time. However, if you have a lift and are comfortable with the task, removing the bed might be preferable.
Regardless of the method you choose, these are general steps (always consult your repair manual for specifics):
1. Safety First: Disconnect the negative battery cable. This prevents accidental sparks.
2. Depressurize the Fuel System: Allow the engine to run until it stalls (after turning the key off, this depletes the pressure). You might also need to use a fuel pressure gauge to ensure it's fully depressurized.
3. Disconnect Fuel Lines: Carefully disconnect the fuel lines using the appropriate tools. Be prepared for some fuel spillage – have rags handy. You'll need to plug the lines to prevent fuel loss.
4. Disconnect Electrical Connectors: Unplug the fuel pump electrical connector(s).
5. Lower the Fuel Tank (or Remove the Bed): Follow the instructions in your repair manual for the specifics of your truck. Support the tank carefully to prevent damage.
6. Access the Fuel Pump: Once the tank is accessible, you'll need to remove the access plate (if present) to reach the fuel pump.
7. Remove and Replace the Fuel Pump: This usually involves using a special fuel pump tool, but sometimes it's held in place by a retaining ring. Follow the instructions provided with your replacement pump.
8. Reassembly: Reinstall the fuel pump, access plate, tank (or bed), and reconnect all fuel lines and electrical connectors.
9. Check for Leaks: After reassembly, carefully check for fuel leaks.
10. Reconnect the Battery: Reconnect the negative battery cable.
Recommendation: Before starting any work, consult a repair manual specific to your 2000 Chevy S10 4WD 4.3L. This will provide detailed instructions, diagrams, and torque specifications to help you complete the job safely and correctly. You may also want to watch some YouTube videos demonstrating the process. If you're not comfortable doing this yourself, take it to a qualified mechanic. Working with fuel is dangerous, so safety should always be your top priority.
