Unfortunately, this is not recommended because there is a lot more to replacing the fuel pump as there are a lot of other components you may need to replace as well, so this may not even solve the problem. There is a good video on YouTube that tells you exactly what is involved and how to diagnose what is really wrong with the fuel delivery system (to some degree).
2011 - 2016 Toyota Sienna Replace Fuel Pump DIY, Fuel Module Disassembly, Fuel Pressure Regulator - Bing video
Best of luck!
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