How do you change the fuel filter on a 1990 Buick LeSabre?

To change the fuel filter on a 1990 Buick LeSabre, first, relieve the fuel system pressure by removing the fuel pump fuse and running the engine until it stalls. After that, locate the fuel filter, typically near the fuel tank, and use a wrench to loosen the inlet and outlet fittings, making sure to have a container ready to catch any spilled fuel. Remove the old filter and replace it with a new one, ensuring the arrow on the filter points in the direction of fuel flow. Finally, reconnect the fittings, replace the fuse, and turn the ignition to the "on" position to prime the system before starting the engine.