I have a 95 silverado. The problem is that the tailights work just fine in the daytime, but when I turn on the interior lights/headlights at night the left tailight turns off when I push the brake, and when I put the left turn signal both the left and right reverse lights flash. I am confused and don't know where to begin. Any help would be appreciated, thanks.

 

Sounds like your having some complex electrical issues. Something tells me this is not a common problem, so no one person is going to be able to just tell you the root cause of this problem. It's going to involve some troubleshooting. I wouldn't even be able to tell you where to start until I saw a wiring diagram. If I had to take a wild guess, I'd say a problem with the multi function switch (the switch that controls your turn signals, wipers, high/low beams, etc... Anyways, good luck