Here's a general outline of the process. This is not a comprehensive guide and should not be substituted for a professional repair manual specific to your van's year and model. Consult a repair manual for detailed diagrams, torque specifications, and safety precautions.
1. Preparation:
* Safety First: Disconnect the negative battery cable. This prevents accidental sparking.
* Gather Tools: You'll need various tools, including wrenches (metric), sockets, ratchets, screwdrivers, jack stands, jack, fuel line disconnect tools, possibly a fuel pump removal tool, safety glasses, gloves, and possibly a fuel pressure gauge.
* Locate the Fuel Tank: It's usually under the vehicle, towards the rear.
* Consult Repair Manual: Find the specific steps and diagrams for your year and engine type. This is crucial.
2. Accessing the Tank:
* Raise the Vehicle: Securely lift the van using a jack and support it with jack stands. Never work under a vehicle supported only by a jack.
* Remove Components: You may need to remove parts obstructing access to the tank, such as the exhaust system components, skid plates, or other underbody shields. This will vary depending on the exact configuration of your van.
* Locate Fuel Lines and Electrical Connections: Identify the fuel lines (inlet and outlet), the vent line, and the fuel pump electrical connector.
3. Disconnecting Components:
* Fuel Lines: Use appropriate fuel line disconnect tools to safely disconnect the fuel lines. Be prepared for some fuel spillage. Have absorbent materials ready. You might want to relieve fuel pressure before disconnecting the lines. Check your repair manual for the proper procedure to relieve pressure.
* Vent Line: Disconnect the vent line.
* Electrical Connector: Carefully disconnect the fuel pump electrical connector.
* Fuel Sender Unit (if applicable): This may need to be disconnected depending on the design.
* Straps or Mounting Brackets: The tank is secured by straps or brackets. Carefully loosen and remove these.
4. Lowering the Tank:
* Lowering the Tank: Carefully lower the gas tank. It may be heavy and awkward. Have someone assist you if possible.
5. Reinstallation (Reverse Order):
* Reinstallation is the reverse of the removal process. Make sure all connections are secure and leak-free. Have the fuel lines checked for proper seating. Torque all bolts to the manufacturer's specifications.
Important Considerations:
* Fuel Spillage: Be prepared for some fuel spillage. Work in a well-ventilated area, away from open flames or sparks. Absorb any spilled fuel immediately.
* Fuel Pressure: Relieving fuel pressure before disconnecting lines is crucial to avoid injury and fuel spillage. Your repair manual will have the correct steps.
* Professional Help: If you're uncomfortable performing this task, it's best to take your van to a qualified mechanic. Improperly handling fuel or damaged fuel lines can be dangerous.
This is a general overview. Always consult a repair manual specific to your 2000 Chevy Express van for detailed instructions and safety precautions. Ignoring this advice could result in injury or damage to your vehicle.
