Hello all. Recently purchased a 2012 Tahoe PPV. Having some electrical issues(like I should be surprised!!). I have been having a problem with the passenger side low beam going on and off. I doesn't act like its a loose wire, as it goes out intermittently. Bumps do not effect it, just goes on and off when it wants. Kinda vague, I know, but any ideas?? Also tracing problem with reverse lights that don't go out. Love the truck though!! Thanks in advance.