I’ve been having issues with headlights (aftermarket) on my 08 G6 gt vert. After car wash or heavy rain both headlights cease to work. They come back on a couple days later (one or both) then left one (usually has most issues) starts flashing when I use left signal. I have had the headlight connectors cleaned and greased twice when they didn’t come back on after a couple days (then they work again). I did buy new connectors but my son hasn’t had time to change them out. Is this caused by the connector or something else?