Here's a general outline of the process. This is not a complete, step-by-step guide, but a summary of the major steps. You will need a detailed repair manual specific to your 1996 Impala SS for precise instructions and torque specifications. A Haynes or Chilton manual is a good investment.
Safety First:
* Disconnect the negative battery terminal. This is crucial to prevent accidental sparks.
* Work in a well-ventilated area. Gasoline fumes are flammable and harmful.
* Have a fire extinguisher readily available.
* Wear safety glasses and gloves.
Steps (General):
1. Lower the fuel tank: This is the most labor-intensive part. You'll likely need to:
* Drain the fuel tank completely. Use a siphon pump or have a shop do it.
* Disconnect the fuel lines (carefully!), the fuel sending unit electrical connector, and the tank vent line. These connections can be brittle and prone to breaking.
* Support the tank with jack stands as you unbolt it from the car's undercarriage. Access might vary depending on your specific vehicle's modifications.
2. Access the fuel pump: The fuel pump is usually located inside the fuel tank, often attached to the sending unit (the part that tells your fuel gauge how much fuel you have). You will need to remove the tank's access plate to reach the pump.
3. Remove the old fuel pump: This typically involves unbolting the pump assembly and disconnecting any electrical connections. Take pictures as you go to help with reassembly. Pay close attention to the orientation of components.
4. Install the new fuel pump: This is the reverse of removal. Make sure the new pump is properly seated and all connections are secure. Double-check the O-rings and seals for proper placement and condition to prevent leaks.
5. Reassemble everything: Carefully reinstall the fuel tank, reconnect all fuel lines, electrical connections, and the vent line. Tighten all bolts to the manufacturer's specifications (consult your repair manual).
6. Reconnect the negative battery terminal.
7. Check for leaks: Carefully inspect all connections for leaks. Start the car and let it run for a few minutes to verify proper operation and check for leaks again.
Tools You'll Likely Need:
* Socket set (metric)
* Wrenches (metric)
* Fuel line disconnect tools
* Jack stands
* Drain pan for fuel
* Siphon pump
* Safety glasses
* Gloves
* Fuel pump installation kit (often includes new seals and O-rings)
* Repair manual
Important Considerations:
* Fuel pressure: Before starting the process, check your fuel pressure using a fuel pressure gauge. This can help diagnose if the pump is the actual problem.
* OEM vs. Aftermarket: OEM (Original Equipment Manufacturer) parts are generally more expensive but offer a better fit and reliability. Aftermarket parts can be a cost-effective alternative, but ensure they're from a reputable supplier.
* Fuel pump assembly: You might need to replace the entire fuel pump assembly, including the sending unit, rather than just the pump itself.
This information is for general guidance only. Consult a repair manual specific to your 1996 Chevrolet Impala SS for detailed instructions, torque specifications, and safety precautions. Again, if you are not comfortable performing this repair yourself, please seek professional help. Working with gasoline is dangerous and mistakes can be costly and even life-threatening.
