The common problem with having no low beams is usually a bad lamp out warning modual.
Check for power at fuse 4 and 8 in the interior fuse panel with the headlights on and set to low beam.If the fuses are powering up, go to the lamp out warning module located under the front of the center console. With the module disconnected, jump pin 1 White/Light Green (W/LG) to pin 11 Dark Blue/White (DB/WH). Then use another jumper and connect pin 12 Dark Blue/Light Green (DB/LG) and pin 13 Dark Green/Orange (DG/OG).Recheck headlight operation. If the low beams work, replace the lamp out warning module.
Thank you so much. I believe you hit the nail on the head. Will a copy of this Q&A be emailed to me?