How do you change fuelfilter on 1996 Cadillac deville northstar?

To change the fuel filter on a 1996 Cadillac DeVille with a Northstar engine, first, ensure the vehicle is turned off and relieve the fuel system pressure by removing the fuel pump relay and starting the engine until it stalls. Next, locate the fuel filter, which is usually positioned along the fuel line under the vehicle. Disconnect the fuel lines from the filter using appropriate tools, then remove the filter from its mounting bracket. Install the new filter in the same orientation, reconnect the fuel lines, and replace the fuel pump relay before starting the engine to check for leaks.