I have been working on this "known" issue for some time with my dealership in Santa Rosa, CA. I own a 2001 L300.
I was experiencing only flickering headlights and dashboard lights in the beginning, just before my 36K mile warranty ended. I notified the dealership and requested a fix. They gave me the corporate line - "This is a known problem and there is no fix. This is not a safety issue."
Yikes. I think this is what Firestone said about their tires.
The problem worsened to the point where I could reproduce it at will by moving the windows up and down, or putting any kind of load on the system. It even got to the point where my sound system would cut out for 1-2 seconds as I turn up my heat, roll up my windows, etc.
My dealership recommended that I speak with Tennessee and let them know my dissatisfaction with the car and the electrical issues. They felt that I could somehow make an impact by talking with corporate CS. I foolishly believed them.
What a waste of time!
THE SATURN CORPORATION DOES NOT GIVE A SHIT ABOUT YOUR PROBLEMS. They could care less about the consumer. They (specifically someone name Shawndra) basically told me to get lost. I told her that I would take my business to another non-Saturn, non-GM car company and she did not care. I have spent over $60K on this line of autos and I will definitely not do that again.
Anyway, I was so livid after the Tennessee phone call, I contact my dealership and demanded to escalate the problem to the next level of management.
The short story: the area service manager took a ride with me and I demonstrated my problems. He decided to remove the battery cables, clean them, etc. He reseated the cables and VOILA, I have had no problems since.
DON'T WASTE YOUR TIME WITH TENNESSEE. THEY DON'T CARE ABOUT YOU OR YOUR SATISFACTION WITH THEIR PRODUCTS. The dealerships seem to care a little bit more, but they spout the company line without applying a little independent, analytical thinking. I had talked about this problem for months before anyone actually proposed a fix. Doh!
I believe this electrical problem constitutes a safety issue. The flickering of lights (headlights and dashboard) causes the driver to become distracted while driving at night. To believe otherwise, is negligence. Ultimately, someone will pay a price for this "known issue" and Saturn will pay too.