You need to drain the gas tank. Then drop the tank. The fuel module in the gas tank. You'll have to take electrical connector/s and fuel line/s loose from gas tank. You could use a floor jack under the tank, to let it down. This guide can help walk you through the job with instructions in the diagrams below to help you with your car.
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.