Horn just quit working. - 2001 Chevrolet Silverado

suggest checking if 12 volts goes to horn wire at horn end when horn pressed from inside vehicle. A 12 Volt probe {google it} can be a cheap checking tool for this.
If 12v volts is switched when button is pressed {could be earth being switched if it is then place probe on constant 12 volts and negative lead on switched earth wire} then the horn itself is faulty.
If no voltage switched then horn relay needs to be checked. check if voltage at horn relay coil contact when button pressed.
if yes then relay may be faulty. if no then horn switch could be faulty.
you can check switched voltage also at horn relay switched contact when relay plugged in. To see if relay is doing what it is meant to do

check if voltage gets to horn. when you press horn button
Check if mud in horn
if voltage then horn has gone faulty.

WITH KEY ON EVERY THING ELSE OFF PUSH THE HORN YOU SHOULD HEAR A SMALL CLICK THAT THE HORN RELAY IF SO TEST FOR POWER AT THE HORN MAKE SURE IT IS STILL CONNECTED IF POWER IS GOOD REPLACED HORN

On these case,to troubleshoot these problem,there are solved help links.Click the link directly and refer the details to solve these problem yourself,with help of diagrams:------
Ford ranger cruise control not working?

http://technoanswers.blogspot.in/2012/02/ford-ranger-cruise-control-not-working.html

----------- Horn and Cruise control quit working?

http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-quit-working.html

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Horn and cruise control not working on Plymouth Grand Voyager?

http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-not-working-on.html

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Horn and Cruise control quit working on 2003 Jaguar S-Type? http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-quit-working-on.html

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Cruise Control stops working, Excessive cranks to start the engine and RPM goes max 2500 http://whoisbyme.blogspot.in/2012/07/cruise-control-stops-workingexcessive.html

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Cruise control stop working on 1994 Ford ranger? http://technoanswers.blogspot.in/2012/02/cruise-control-stop-working-on-1994.html

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Cruise control not working? http://schematicsdiagram.blogspot.com/2011/12/cruise-control-not-working.html

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1996 Ford Explorer: Cruise Control Wiring Diagram?

http://schematicsdiagram.blogspot.in/2012/06/1996-ford-explorer-cruise-control.html
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These will help.
Thanks.

To troubleshoot your problem,there are few help links,provided below.Click the link directly and follow the procedure to confirm the fault.So as per that you can continue further in repairing this issue of cruise control not working.
The direct help links are as follows :-----cruise control not working?

http://technoanswers.blogspot.in/2012/02/ford-ranger-cruise-control-not-working.html
-----------Horn and Cruise control quit working?

http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-quit-working.html

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Horn and cruise control not working on car?

http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-not-working-on.html

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Horn and Cruise control quit working suddenly?

http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-quit-working-on.html

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Cruise control stop working ? http://technoanswers.blogspot.in/2012/02/cruise-control-stop-working-on-1994.html

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ford ranger cruise control not working? http://technoanswers.blogspot.in/2012/02/2005-ford-ranger-cruise-control-not.html

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My Cruise control not working? http://schematicsdiagram.blogspot.com/2011/12/cruise-control-not-working.html

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This troubleshooting help links will help you to confirm the problem.

Thanks.

my horn quit working on my 99 wrangler...took it to a shop...the part they changed was called a clock switch...very expensive part but it fixed the problem...part was supposedly dealer only part...horn works great now

If the relay is clicking,then the horn is the problem,make sure it has a good connection,if so,replace the horn.

Sounds like a bad clockspring

Could be a bad clock spring in the steering column.
To replace it, the airbag has to come out and so does the steering wheel.
PLEASE do not try to replace it yourself.
If not done by a qualified mechanic, the airbag can go off.

• horn fuse 20 amps and is behind right side of instrument panel
• radio fuse is 10 amps and is behind right side of dash-board
• rate me FIXYA!...thanks