The answer to 'GFCI outlet flickering lights' is that a flickering or blinking GFCI outlet is often caused by a ground fault or other electrical issue. GFCI outlets are designed to detect ground faults and trip to prevent electric shocks, but a flickering light can indicate a problem that needs to be addressed.
Common causes of a flickering GFCI outlet include a faulty GFCI, a wiring issue, or a problem with the connected appliance or device. It's important to troubleshoot the issue to determine the root cause and take the appropriate action, whether that's replacing the GFCI, fixing the wiring, or addressing the connected equipment.