C5 Alarm system disarm procedure
Thread Starter
Le Mans Master
Joined: Sep 2000
Posts: 6,388
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From: Huntsville AL
C5 Alarm system disarm procedure
Question - I have tried a couple of times to disarm the alarm system on my c5 corvette. When I get out of the car and I close the door the car alarm systems will activate because if I re open the door the horn will start to blowing. I have read the book and followed the procedures to best of my ability but the cant get it set so that when I park my car and i want to go back into the car couple minutes later the system will allow me to just open the door without the alarm going off?
Race Director
Joined: Feb 2008
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From: Maker of Sharp Objects, AL - Roll Tide
St. Jude Donor '10-'11-'12-'13-'14-'15-'16-'17
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Yeah don't lock it and then try to open it from the inside. That will set it off 
See my locked keys inside the car thread
See my locked keys inside the car thread
Thread Starter
Le Mans Master
Joined: Sep 2000
Posts: 6,388
Likes: 2
From: Huntsville AL
ok thanks I get out of the car, lets say I pull in my garage get out my car and I dont lock it, and I go back ten minutes later to open the door and get something out of my car and the alarm will go off. For some reason this started couple months ago and I didnt change anything on the car > 2000 coupe
Thread Starter
Le Mans Master
Joined: Sep 2000
Posts: 6,388
Likes: 2
From: Huntsville AL
Also when I say disarm what I mean is to set the alarm function so that lets say I am washing my car in the driveway and the keys are not in the car, If i open the door the alarm system will go off.
Thread Starter
Le Mans Master
Joined: Sep 2000
Posts: 6,388
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From: Huntsville AL
the factory alarm arms when you lock the doors, so the aftermarket alarm will arm both (not a bad thing) but when the factory alarm is armed turning on the parking lights alone will set it off, the aftermarket alarm could trigger the factory alarm while flashing the lights etc. what can I do about this?
The alarm system on my car turns on even when I dont lock my doors
The alarm system on my car turns on even when I dont lock my doors
Tech Contributor
Joined: Oct 1999
Posts: 41,066
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From: Charlotte, NC (formerly Endicott, NY)
the factory alarm arms when you lock the doors, so the aftermarket alarm will arm both (not a bad thing) but when the factory alarm is armed turning on the parking lights alone will set it off, the aftermarket alarm could trigger the factory alarm while flashing the lights etc. what can I do about this?
The alarm system on my car turns on even when I dont lock my doors
The alarm system on my car turns on even when I dont lock my doors
Bill
Melting Slicks
Joined: Aug 2003
Posts: 2,786
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From: Iowa
yeah, if its doing what you say that is not how the stock security system works. either something is wrong or you've got an aftermarket alarm with some kind of passive arming system. you said your car is 2000+ so you don't have factory passive arming either right (was that gone in 2000??? I have a 99 which does have it) if you have a passive switch on your key fob set it to off or it will arm itself.
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Team Owner
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From: Columbus Ohio
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St. Jude Donor '06-'08-'10
Thread Starter
Le Mans Master
Joined: Sep 2000
Posts: 6,388
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From: Huntsville AL
Team Owner
Joined: May 1999
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From: Columbus Ohio
CI 3-4, 8-9-10 Veteran
St. Jude Donor '06-'08-'10
I think people took this to mean that you had an aftermarket system installed.
the factory alarm arms when you lock the doors, so the aftermarket alarm will arm both (not a bad thing) but when the factory alarm is armed turning on the parking lights alone will set it off, the aftermarket alarm could trigger the factory alarm while flashing the lights etc. what can I do about this?
Melting Slicks
Joined: Aug 2003
Posts: 2,786
Likes: 7
From: Iowa
the factory alarm arms when you lock the doors, so the aftermarket alarm will arm both (not a bad thing) but when the factory alarm is armed turning on the parking lights alone will set it off, the aftermarket alarm could trigger the factory alarm while flashing the lights etc. what can I do about this?
to prevent the aftermarket alarm from setting of your stock alarm:
1) always arm the aftermarket alarm first, then stock
2) don't use the stock alarm anymore
3) wire it up that way...you would have to tap into each of the 4 turn signal/marker bulbs and diode isolate each one to prevent the alarm signal flashing the parking lights from backfeeding to the BCM and thus triggering the stock alarm. its possible, but a pain to do. I was going to go for it because I like having things done 100% but I ultimately had to decide that it was not worth the trouble.
Thread Starter
Le Mans Master
Joined: Sep 2000
Posts: 6,388
Likes: 2
From: Huntsville AL
there's not much you can do. and the aftermarket alarm will only arm the stock alarm if you arm the aftermarket alarm with the door open. hitting the lock button doesn't arm the stock alarm if the doors are closed.
to prevent the aftermarket alarm from setting of your stock alarm:
1) always arm the aftermarket alarm first, then stock
2) don't use the stock alarm anymore
3) wire it up that way...you would have to tap into each of the 4 turn signal/marker bulbs and diode isolate each one to prevent the alarm signal flashing the parking lights from backfeeding to the BCM and thus triggering the stock alarm. its possible, but a pain to do. I was going to go for it because I like having things done 100% but I ultimately had to decide that it was not worth the trouble.
to prevent the aftermarket alarm from setting of your stock alarm:
1) always arm the aftermarket alarm first, then stock
2) don't use the stock alarm anymore
3) wire it up that way...you would have to tap into each of the 4 turn signal/marker bulbs and diode isolate each one to prevent the alarm signal flashing the parking lights from backfeeding to the BCM and thus triggering the stock alarm. its possible, but a pain to do. I was going to go for it because I like having things done 100% but I ultimately had to decide that it was not worth the trouble.
ok thanks I dont have an aftermarket system just the factory system
Thread Starter
Le Mans Master
Joined: Sep 2000
Posts: 6,388
Likes: 2
From: Huntsville AL
yeah, if its doing what you say that is not how the stock security system works. either something is wrong or you've got an aftermarket alarm with some kind of passive arming system. you said your car is 2000+ so you don't have factory passive arming either right (was that gone in 2000??? I have a 99 which does have it) if you have a passive switch on your key fob set it to off or it will arm itself.
