Upgraded the OEM fog lights to a set of Baja Designs Sport Fog Pocket Light Kit. Install was super easy. Assemble the mounts, undo three screws holding the old one in, mount the new fog light with the same three screws, and plug into the existing harness (no wiring needed). The light output on these are crazy bright compared to stock ones. I went with Amber but they have white as well. Check them out if you are looking for an easy upgrade.
https://www.bajadesigns.com/products/chevy-gmc-squadron-sport-fog-pocket-light-kit-chevy-gmc-2019-2021-silverado-sierra-1500-2020-2021-2500hd-3500hd/?page=1&vid=152887&sku=447518