* Truck model: The specific model of your 2000 Chevy truck (e.g., Silverado, Silverado 1500, 2500, etc.) will significantly affect the difficulty. Some models have easier access to the fuel pump than others. Access might require dropping the fuel tank, which is labor-intensive.
* Your mechanical aptitude: If you're comfortable working on cars, have basic tools, and are familiar with fuel system safety procedures, it'll be less challenging. If you lack experience, it's a more significant undertaking.
* Availability of a repair manual: A repair manual specific to your truck's year and model is invaluable. It will provide detailed instructions, torque specifications, and diagrams.
Here's a breakdown of what makes it challenging:
* Fuel tank removal: Often, the fuel pump is located inside the fuel tank. This means you'll likely have to drop the fuel tank, which involves disconnecting fuel lines, electrical connections, and possibly the tank straps. This is the most time-consuming and potentially messy part.
* Fuel system safety: Working with gasoline is inherently dangerous. You must take precautions to avoid sparks and fires. This includes disconnecting the battery, ensuring proper ventilation, and using appropriate safety equipment.
* Proper sealing: After replacing the pump, you must ensure the fuel tank is properly sealed to prevent leaks.
* Specialized tools: You might need special tools, such as a fuel line disconnect tool, a fuel pump socket, and possibly a fuel tank strap wrench.
In summary: While it's *doable* for a competent DIYer, replacing a fuel pump isn't a beginner's project. If you're unsure about any aspect, it's best to have a qualified mechanic perform the repair. The cost of a mistake (e.g., a fire or fuel leak) far outweighs the cost of professional labor. Consider the time commitment involved as well; it can easily take a full day or more.