Horn does not work; where is the horn?? in a 2002 2500HD 4X4? Many thanks.\r\nBob ibGorham Maine

Check your fuses, It sounds like you have a blown fuse

the horn have fuse and relay in engine fuse compartment.inspect all the fuses. in your owners manual is the location of the fuse and relay. if OK, one person push the horn and other check power to the horn.if no power swap the relay with other one for test.if you SRS light is ON and the horn does't work suspect the clock spring(soft connection below the steering wheel to column)
good luck

no need to take of the steering wheel.. locate the old horn.. then remove it.then put the new horn. if the old horn has only1 wire its ok. then the new horn has 2 wire. just body ground the 1 wire[no polarity] choose any of the 2. to the body gound or join the brack of the horn together.then the other to the original wire of the old horn

You have 2 horns,high and low,check out the connections there and the ground,could just be loose,not normal for horns to go out at this year.Have some one blow horn and listen to both to make sure both are working,One might be bad,or connections are rusted,get sand paper and rough up to get better connection,if this don't work,guess what,as you know,horns are not cheap,replaced mine on my 85 Nissan 720 4x4.Now they are loud.

Click on link to view.http://www.autozone.com/autozone/repairinfo/componentlocations/componentLocationMain.jsp?fromSearchPage=true&categoryNValue=4294747004&categoryName=Horn+Relay Here's the relay.

its possible the horn itself burned out after being on for so long.

WHEN THE HORN IS GOING OFF PUT A GROUND WIRE TO THE BODY OF THE HORN IF THIS STILL HAPPEN CHECK YOUR HORN SWITCH IN THE STEERING IT MAY BE STIKING OR THE WIRE MAY HAVE SHORTS

you are either getting water in your horn, common for trucks, or it could be a bad ground.
have you ever blown the fuse for the horn?

Check your fuses first for a blown fuse. Also try to recall last time you used the horn, and if it sounded muffled, quieter than normal or just not right, and if it was acting up it's more than likely the horn, wich is located under the bumper by the fender usualy. Also remove your horn button on the wheel, and make sure the wire is conected, and intact.
Hope this helps, Good luck!

have someone beep horn while you look for it.