Question about 1997 Buick Riviera

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1997 Buick Riviera Horn

I have a 97 Riviera and when I used the chirper to alarm the car after closing the door, the horn stayed on in one constant tone instead of just a short beep. I put the key in the door and even started the car, this didnt work. The only way I was able to stop the horn was to remove the horn relay located in the engine compartment fuse box.
I replaced the relay with a new one and as soon as the relay has contact, the horn goes off again and is still just a very loud constant noise. Any ideas? I have an appt at the dealer tomorrow but I dont really have the money to be taken for a ride.

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  • thomas langer Apr 23, 2010

    The dealer told me that the horn is not related to the alarm. they say its a faulty wire somewhere.

  • Alex May 11, 2010

    Sounds to me like it could be as simple as a stuck switch in your steering wheel

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Before you have any work done by any repair shop or dealer ask for a firm estimate in writing. Ask about the warranty, how long is the work guaranteed. I often use an autoelectric repair shop as opposed to a dealer as dealers are often stealers. Joe

Posted on Apr 23, 2010

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I would guess that the car alarm is defective and will need to be replaced.
If you don't have the money right now you may want to consider either having the alarm removed or use the valet parking option. By using it you will bypass the car alarm and in a since stop the horn issue.
The alarm module is solid state and is not servicable.

Posted on Apr 23, 2010

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1 Answer

Alarm horn will not turn off


do you have the alarm option, factory?
there are 2 horns
and 1 horn relay.
if the horn relay is energized, then the inputs to it are bad.
bad input is the horn relay has 12v across is coil pins, all the time.
so unplug the horn wires. silence.
then check relay , now that its quiet. is the coil hot?
hot means 12vdc across it. not thermal hot.
the relay on the 97 can be active for 2 reasons.
1: horn button stuck on, so pull that wire.Gray-org, at column
2: BCM is active same color, C2 in 13 is 0volts. (active)
if the BCM is honking the horn, we ask why, and that be alarm.
im reading at alldata.com so can you , under antithieft alarm sections.
if the alarm is activated, (is it) and any door switch is open, the horn honks.
if the gray-org. wires is at 12vdc , then the relay is bad
shorted, main contacts inside.
if the wire is 0v, its wrong.
ill stop, and wait until you find which it is, bad relay, bad horn button
or bad BCM or bad input to BCM.

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Typical scenario of the horn pad needing to be replaced at the steering wheel, may have to search the wrecking yards for a replacement or take the pad off and try to discover what part of it is bad and try to repair what you have.
Some folks have added a button useing the same twop wires that control the horn pad, thus eliminating the need to find a replacement horn pad in the proper color etc. a hole drilled into the dash and the button installed makes it a lot easier and cheaper and yiou still have a horn.
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1 Answer

Car doesnt start immeditately. security light comes on. once security light goes out car starts. Why?


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well, as ive said, i may be wrong. =)

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