Tools You'll Likely Need:
* Jack and jack stands: Absolutely essential for safety. Never work under a vehicle supported only by a jack.
* Wheel chocks: To prevent the vehicle from rolling.
* Socket set and wrenches: Various sizes will be needed for bolts, lines, and electrical connectors.
* Fuel line disconnect tool: This makes disconnecting the fuel lines much safer and easier. Avoid using a screwdriver or other improvised tools.
* Torque wrench: For tightening bolts to the proper specifications.
* Safety glasses and gloves: Protect yourself from fuel spills and sharp edges.
* Shop rags or absorbent material: To clean up any spilled fuel.
* Fuel pump removal tool (sometimes): Some fuel pumps are easier to remove with a special tool.
Steps (General):
1. Safety First: Disconnect the negative (-) battery cable. This helps prevent accidental sparks near flammable fuel. Park on a level surface, engage the parking brake, and use wheel chocks.
2. Lower the Fuel Tank: This involves:
* Removing the access panel(s): There will be panels under the vehicle, usually near the rear, that need to be removed to access the fuel tank straps and lines.
* Disconnecting the fuel lines: Carefully disconnect the fuel supply and return lines. Use a fuel line disconnect tool to avoid damaging the lines or creating leaks. Have rags ready to absorb any spilled fuel.
* Disconnecting the electrical connector: Unplug the electrical connector to the fuel pump.
* Loosening and removing the fuel tank straps: These straps secure the tank to the vehicle's frame. They might be bolts or clamps.
* Carefully lowering the fuel tank: You'll likely need to support the tank as you lower it to prevent damage. Use jack stands or a suitable support. The tank might be heavy!
3. Accessing the Fuel Pump: Once the tank is lowered sufficiently, you should be able to access the fuel pump assembly. It's usually located on top of the fuel tank.
4. Removing the Fuel Pump: This often involves removing a retaining ring or cover, then disconnecting the pump from the tank. Consult a repair manual for your specific vehicle for detailed instructions.
5. Installation: Follow the removal steps in reverse order to install the new fuel pump. Remember to torque all bolts to the proper specifications.
Important Considerations:
* Repair Manual: A repair manual specific to your 2000 GMC Jimmy is highly recommended. It will provide detailed diagrams and instructions that are far more accurate than general advice.
* Fuel Pressure: The fuel system will likely be under pressure. Release this pressure according to the instructions in your repair manual before disconnecting the fuel lines.
* Fuel Smell: Be aware of the potential for fuel vapors. Work in a well-ventilated area.
* Professional Help: If you are not comfortable performing this repair, consider having a qualified mechanic do it. Improperly handling fuel lines and the fuel tank can be dangerous.
This is a complex repair. Always prioritize safety and consult a repair manual or a qualified mechanic if needed.
