Here's a general outline. Specific steps might vary slightly depending on your Blazer's engine and configuration. Always consult a repair manual specific to your vehicle's year, engine, and trim level for detailed instructions and diagrams. A Haynes or Chilton manual is a good investment for this type of work.
Tools You'll Likely Need:
* Socket wrench set (metric)
* Wrenches (metric)
* Screwdrivers (Phillips and flathead)
* Fuel line disconnect tool (highly recommended – avoids damaging lines)
* Pliers
* Jack and jack stands (essential for safety)
* Safety glasses
* Gloves
* Rags
* New fuel pump (ensure you get the correct one for your vehicle)
* Fuel pump gasket (often included with the new pump)
* Possibly a fuel pressure gauge (to check pressure after installation)
General Steps:
1. Safety First: Disconnect the negative battery terminal.
2. Vehicle Preparation: Jack up the rear of the vehicle and securely support it on jack stands. This gives you access to the fuel tank.
3. Fuel Tank Access: Locate the fuel tank access panel (usually under the vehicle, near the rear axle). This might involve removing some plastic panels or trim pieces. You may need to lower the spare tire depending on configuration. Consult your repair manual for precise location.
4. Fuel Line Disconnection: Carefully disconnect the fuel lines. Use a fuel line disconnect tool if possible. This will prevent damage to the lines. Have rags handy to soak up any spilled fuel.
5. Electrical Connections: Disconnect the electrical connector from the fuel pump.
6. Fuel Pump Removal: You'll likely need to remove the fuel pump access plate from the top of the fuel tank. This is usually held in by screws or bolts. Once the plate is removed, you should see the fuel pump assembly. The assembly might be secured with a retaining ring or clamp.
7. Pump Replacement: Carefully remove the old fuel pump assembly, noting the orientation of any components. Install the new fuel pump, ensuring the gasket is properly seated.
8. Reassembly: Reassemble everything in the reverse order of disassembly, making sure all connections are secure. Pay particular attention to the fuel lines and electrical connector.
9. Pressure Test (Optional but Recommended): After reassembly, reconnect the battery and check the fuel pressure with a gauge (if available) to ensure the new pump is functioning correctly. This step helps avoid potential problems later on.
10. Lower Vehicle: Carefully lower the vehicle from the jack stands.
11. Test Drive: After reconnecting the battery, crank the engine to ensure it starts and runs smoothly. Test drive the vehicle to confirm proper fuel delivery.
Important Considerations:
* Fuel Pressure: Some vehicles require the fuel system to be depressurized before working on the fuel pump. Your repair manual will provide instructions on how to do this safely.
* Fuel Pump Strainer: The fuel pump often incorporates a strainer. Check its condition and replace it if necessary.
* Safety: Gasoline fumes are highly flammable and can be explosive. Work in a well-ventilated area and avoid sparks or open flames. Always handle fuel with care.
This is a simplified overview. Always refer to a repair manual specific to your 2000 Chevy S10 Blazer for detailed, step-by-step instructions and diagrams. If you're uncomfortable performing this repair yourself, it's best to take your vehicle to a qualified mechanic. Improper installation could lead to serious damage or injury.
