Marker Light Question

[webco275]

I've been having problems with the driver's side marker light on my '97 RS. During the day the passenger side marker is on and the blinker works fine, but the driver's side does not and the blinker is hit or miss. Now here is the crazy thing, at night both markers and blinkers work fine. I traced the electrical schematic down and found that it goes through a Daylight run module. I believe I've located the module behind the radio about the size of a pack of smokes. My question is has anyone else experienced this, if so what was the fix. I had one person tell me that I needed to change out the light socket on the marker. I've gone through and cleaned the socket as best as I can already without any luck. So I'm open to any help. My wife will be driving it soon, and I do not want her to be in a wreck due to the blinker not working properly.