Driving out of the local Wal-Mart one night headed down the street I noticed that I could not see my headlights. I thought it was because of the street lights, but when I drove into a dark spot in the road there were no headlights. They did not return until the next morning when my wife was off to work. The strange thing is my high beams were not affected. I called Chevy company and was told there was no recall or any such problems reported, so there was nothing they could do.