Suburban 4WD switch on dash has a buggy light

I have a 99 Suburban that has the 4WD rocker panel switch mounted on the dash. The light goes on and off intermittently. When it goes out, if I push on the panel, it will turn on again. I want to spray contact cleaner on the connector but I can't figure out how to access it. Can someone tell me how to get behind the panel or remove it so I can access the the connector? Thanks!