Where is the fuel filter on 2001 Bonneville?

For most GM vehicles, it is under the vehicle, behind the drivers seat. On any car or engine, you can always start at the fuel injector or carbourator and follow the line leading to it backwards till you find any part of the fuel system your looking for, including modified ones. This should only take a few minutes and has the advantage of exposing any other things (like pressure regulators, etc) also in the system that may have caused a problem. Uh...this also works from the gas tank and following it forward...or anywhere along the system you want to start! True, if it's in the fuel tank, as some are, you'll end up, by elimination, isolating it to having to be there.