Tools You'll Need:
* Socket wrench set (metric)
* Ratchet and extensions
* Torque wrench
* Fuel pump pliers (or similar tool to clamp fuel lines)
* Pry bar or flathead screwdriver (for disconnecting fuel lines)
* Safety glasses
* Gloves
* Jack and jack stands
* Wheel chocks
* Fuel line disconnect tool (recommended, makes disconnecting lines easier)
* Shop rags or paper towels
* New fuel pump (ensure it's the correct one for your Blazer's engine)
* New fuel filter (recommended)
* Possibly new fuel pump gasket and o-rings
Step-by-Step Instructions:
1. Safety First: Disconnect the negative battery terminal. Allow several minutes for any residual electrical charge to dissipate.
2. Vehicle Preparation: Park the Blazer on a level surface, engage the parking brake, and chock the wheels.
3. Access the Fuel Pump: Most 1995 Chevy Blazers have the fuel pump located inside the fuel tank. This requires dropping the fuel tank.
* Locate the fuel tank access panel: This is usually located underneath the vehicle, near the rear axle. You might need to remove some plastic underbody shielding to access it.
* Support the Fuel Tank: Carefully lower the fuel tank using a jack and jack stands. Do not let the tank hang by the fuel lines. This could damage the lines or the tank itself. You may need to disconnect or loosen the tank straps first. Consult a repair manual for your specific Blazer model to determine the best approach.
* Disconnect Fuel Lines and Electrical Connector: Use fuel line disconnect tools to carefully disconnect the fuel lines (both supply and return). Have rags handy to soak up any spilled fuel. Clamp the lines to prevent fuel from leaking. Next, disconnect the fuel pump electrical connector.
4. Remove the Fuel Pump Assembly: Once the lines and connector are disconnected, you should be able to access the fuel pump assembly which is typically bolted to the top of the fuel tank. Consult a repair manual for your exact Blazer model as the access may differ slightly.
5. Install the New Fuel Pump: Carefully inspect the new fuel pump to ensure it matches the old one. Install any new gaskets or O-rings as needed. Install the new fuel pump into the fuel tank.
6. Reconnect Everything: Reconnect the fuel pump electrical connector, the fuel lines, and secure the fuel pump assembly to the fuel tank.
7. Reinstall the Fuel Tank: Carefully raise the fuel tank back into place using the jack. Secure the tank straps.
8. Reconnect the Battery: Reconnect the negative battery terminal.
9. Prime the Fuel System (Important): Turn the ignition key to the "ON" position several times (without starting the engine). This will allow the fuel pump to prime the system and fill the fuel lines.
10. Start the Engine: Attempt to start the engine. Check for leaks around the fuel lines and pump.
11. Test Drive: Take a short test drive to ensure the fuel pump is working correctly and there are no leaks.
Important Considerations:
* Repair Manual: A repair manual specific to your 1995 Chevy Blazer is highly recommended. It will provide detailed diagrams, torque specifications, and other crucial information.
* Fuel Pressure: After installation, you may want to check fuel pressure using a fuel pressure gauge to ensure the pump is delivering the correct pressure.
* Professional Help: If you are uncomfortable performing this repair yourself, take your Blazer to a qualified mechanic. Replacing a fuel pump incorrectly can lead to serious problems.
This is a general guide; the specific steps may vary slightly depending on your Blazer's trim level and engine type. Always consult a repair manual for your specific vehicle before attempting this repair. Remember to prioritize safety throughout the process.
