All fuses are good, relay, bulbs, and switch have been replaced. Still no low beam headlamps. All other lights are working normally at this time.
Normally if both low beams stop working at the same time it is the headlight relay in the underhood fuse box. it is labeled HDM. If it has been replaced as you mentioned already, the next step would be to inspect the bulb harness connectors for burnt terminals and poor fitting terminals. If all of that checks out okay test at the headlight connectors to see which circuit is missing; power or ground.