Thread: horn blowing on its own.

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  1. #1 horn blowing on its own. 
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    My 2002 GP years ago, one time the horn blew for about 2-3 sec, for no reason while I was driving it That was like in 2005 !!! Car was 3 years old. Never did it again.

    Just recently it happened in 2024? While I was driving it, the horn sounded for about 2-3 sec.

    Tonight, in front of my house . . . it did it just sitting there?

    no lights come on, just the horn blows, again about 2-3 sec.

    Where are the actual horns located, I guess behind the front grill, are they easy to get to? Where is the horn relay located, is it easy to get too . . . any ideas on what might be causing this? How to troubleshoot it?

    Until I fix it, what is the best way to "disconnect the horn" when I park it overnight, just disconnect battery?
    Last edited by alok; 1 Week Ago at 08:20 PM.
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  2. #2 Re: horn blowing on its own. 
    GrandPrix Junkie
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    Pull the underhood fuse. Should be #36.

    2002 Pontiac Grand Prix fuse box diagram - StartMyCar
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  3. #3 Re: horn blowing on its own. 
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    Quote Originally Posted by alok View Post
    Where are the actual horns located, I guess behind the front grill, are they easy to get to? Where is the horn relay located, is it easy to get too
    this is the diagram for the horns for 97-03

    they have horn Connectors on both passenger and driver side my car only has passenger side hooked up

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  4. #4 Re: horn blowing on its own. 
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    I have a 2001 Grand Prix. The horns are located in front of the windshield fluid reservoir. You might be able to get to it from underneath once you pull the plastic shrouds off or by taking the passenger headlight out. I have my bumper loose, inner fenders and most bottom shrouds removed, and headlight out. These images show the horn from the wheel well and from the headlight.

    Code:
    https://mega.nz/file/ylZRxZBB#YYKAL8URSNDsxNv47QA85ZTRS9rMO0LR6Hkrp9VtodI
    https://mega.nz/file/Do5THZqT#vgSXIoKE2Ll00kPyDKzjgHIHWwmNaA1fQGwTh6NcL5Q
    It seems that adding links to messages causes database errors...

    Last edited by jeepers; 1 Week Ago at 09:46 AM.
    '01 Grand Prix GTP Special Edition
    Trying to stay pretty close to stock now. Just a few bolt-ons for fun.
    Trying to keep it alive, pretty, and fun.
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  5. #5 Re: horn blowing on its own. 
    GrandPrix Junkie idrivejunk's Avatar
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    If at any point the steering wheel or driver's airbag has been removed, a possibility of damage to the plastic tube that extends from the clockspring and contains a spring loaded plunger (which is the horn connection) can easily become damaged or out of place and could cause this. Use proper precautions if working on or around any SIR system components. Airbags snap bones like twigs.
    All Grand Prix, all the time. 69 Model J, 99 GT & GTP coupes. All junk, haha.
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