Dash lights stopped working yesterday on my 99 Camaro Z28 M6, but the headlights were still on. I was driving tried everything including the headlight switch and the dimmer but nothing. Then they randomly turned on back. For a few days now they've been going in and out. Not sure what it could, I don't believe it's fuse because if it was the fuse then they would be out completely. What could be causing this issue.