help electrical problem with flashers

i have a 97 aurora and the flashers go off on there own, no keys in it nothing just goes off, can any one help, its not a constint thing it comes and goes thought it was a battery issue but its not

Well, flashers don't normally need keys to work, if my memory is correct. Sounds like a short in the flasher switch. You never know..when things get hot/cold they expand/contract...which can even cause shorts.