Lights flickering

Well folks my problem is this i have a 97 LS and when i use it at night i can see the dash lights,radio and the headlights flickering.. Ive tried replacing the battery and it still doing it.. this thing is getting on my nerves.. Anyone here have an idea what i should be looking at for a possible solution..:confused:

I had that problem a while back on my 96 Blazer. My lights flickered so bad that going down the highway the passing cars that I was flashing them for their bright lights. Turns out that my alternator voltage regulator was bad. When I went to return it they said it tested out okay but I insisted that it was bad so they gavbe me a new one and problem was solved.

Yep, same here. I bought a Blazer Xtreme new 2 years ago (2001) and that was one of the problems I had with it. The dealer changed the alternator voltage regulator and no more flickering. I got a whole new alternator the first time I took it in for that problem. It was the second time that they fixed it.