I have an 01 expy it rained today now my washer fluid and 4x4 lites on the dash keep coming on, and every now and then my buzzer for my lites come on at random times. What could have gotten wet to cause this, or what else might it be? Thanks, clint

 

You may have a windshield leak - check the GEM under the dash.

 

pull the fuse for the GEM and then reinsert it. see if that helps.

 

Crap, I was hoping that it wouldn't be that, but 1 other thing that I forgot to mention was my heater motor won't shut off when you shut the truck off. Thanks guys for the responses