How do you change the fuel filter on a 2004 Chevrolet trailblazer?

To change the fuel filter on a 2004 Chevrolet Trailblazer, first, relieve the fuel system pressure by removing the fuel pump fuse and running the engine until it stalls. Then, disconnect the battery and locate the fuel filter under the vehicle along the frame rail. Use a wrench to loosen the fittings on both sides of the filter and remove it. Install the new filter by reversing the process, ensuring the flow direction is correct as indicated on the filter, and reconnect the battery.