Turn off power to the outlet at the breaker panel
Verify the power is off with a voltage tester
Remove the outlet cover plate
Unscrew the GFCI outlet from the electrical box
Pull the outlet out carefully
Take a photo or label the existing wire connections
Disconnect the wires from the old GFCI outlet
Connect the wires to the new GFCI outlet
Attach the line wires to the LINE terminals
Attach the load wires to the LOAD terminals if needed
Connect the ground wire to the green ground screw
Tighten all terminal screws securely
Fold the wires back into the box
Screw the new GFCI outlet into the electrical box
Reinstall the cover plate
Turn the power back on at the breaker
Press the RESET button on the GFCI outlet
Test the outlet using the TEST button
Confirm the outlet trips and resets properly