Chevrolet Repair: 2004 Chevy Impala Horn, chevy impala, gm dealer

Question
My horn stopped working one day.  It did not go weak, just stopped.  Any ideas on where to start first?  
Thank you,
Sherry

Answer
Your horn fuse is probably blown due to water intrusion into the horns.  Gm offers covers that go onto horns.  If you are going to rplace them I recommend getting the horns and the covers from your local gm dealer.  The horns are located under the rh headlight.