is there a fuel filter on buick 2008 lucerne buick 2008 lucerne 2.6 engine

Hello, There is, and it is called the fuel strainer. It is located on the fuel pump module, and the entire module is replaced as a unit when there is a problem with the module. Also, the engine is likely a 4.6 liter engine, as a 2.6 liter does not exist for that year model.