I've got a 2000 Kodiak 400 that has been garage kept, but been sitting for a while. I just replaced the battery to get it going again, but when I turn the key to the "on" position, there is a buzzing or humming noise coming from the front end. It will crank and run, but still buzzing/humming. I believe it is something related to the Four Wheel Drive. When i push the on-command 4x4 button, the humming changes pitch. Anyone run across this before?