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Old 04-02-2025, 09:19 AM   #1
wbeasley
 
Drives: Chevy Camaro ZL1 2021
Join Date: Mar 2025
Location: Miami, Fl
Posts: 6
How Thieves are disabling your ZL1 Horns

Folks, Someone or some people tried to steal my convertible 2021 ZL1 the other night. At first, after i saw the top cut, i thought it was just some kids looking for something of value. Then that night i was walking into the house and hit the lock button on my key fob and did not hear the beep.. That caught my eye immediately. I opened the door pressed the horn and nothing. Checked the fuse and it was fine. I could hear the relay clicking under the fuse block in the engine compartment. The next morning i was looking at the schematics were the horn is. There is a horn under each headlight. Low tone horn on drivers side, High tone horn on passenger side. they had reached in through the lower left and right duct pulled down the rubber flaps and had direct access to the horns and simply unplugged them before they started to try and steal my car. I have attached clear photos showing this. I recommend you relocate your horns or place something near the horn that would quickly demotivate an attempted disable of the horns.

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Last edited by wbeasley; 04-02-2025 at 09:21 AM. Reason: Corrected photo orientation
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Old 04-03-2025, 07:53 AM   #2
Curr
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Great info. Good detective work.

Also, everyone should get an Igla.
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Old 04-03-2025, 08:13 AM   #3
dfxrte
 
Drives: 22 ZL1 M6
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great info, and agree with above. I've said it 15x in various anti theft forums lol. never use the fob with igla either
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Old 04-04-2025, 10:43 AM   #4
Drnick
 
Drives: 22’ ZL1
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Convertibles are impossible to secure,the only security
For them is in your own personal garage!
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Old 08-31-2025, 03:37 AM   #5
Gregoslegos
 
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Drives: 2016 2SS
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Location: Bay Area
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This same thing happened to me. They didn’t wind up taking the car, my glass didn’t break thankfully for them to get in but my neighbors cameras caught the person at my front bumper for about a min before he tried to break into the car. I hadn’t tried my lock cus I disabled the automatic beep but when I tried it manually no horn was on.
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Old 09-07-2025, 05:41 PM   #6
TurboC3
 
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Drives: 23 ZL1, 08 C6 vert, 70 Skylark GSX
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I think, we all should zip tie double sided razor blades to the horn connectors. Problem solved.
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Old 09-07-2025, 10:06 PM   #7
clj94104
 
Drives: Camaro ZL1
Join Date: Jan 2025
Location: Tampa, FL
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Quote:
Originally Posted by dfxrte View Post
great info, and agree with above. I've said it 15x in various anti theft forums lol. never use the fob with igla either
Why never use the fob? My installer said it was fine.
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Old 09-15-2025, 06:28 AM   #8
Bangkok_ZL1
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Drives: 2019 Camaro ZL1
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Quote:
Originally Posted by TurboC3 View Post
I think, we all should zip tie double sided razor blades to the horn connectors. Problem solved.
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Old 09-16-2025, 12:20 AM   #9
roostere4
 
Drives: 1987 IROC, 2020 ZL1
Join Date: Nov 2023
Location: Nashvile
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Quote:
Originally Posted by clj94104 View Post
Why never use the fob? My installer said it was fine.
It really comes down to the level of security you are looking for. The fob can be secure, but also depending on the situation it is less secure than using the pin code.

For example if you keep the IGLA fob with your regular Key Fob, if you keys are ever stolen then the thief wouldn't even know you have the IGLA installed. The car will just start and run for them just like a vehicle without an IGLA installed.
So while might not be something too worried about, give 2 examples where the key can open you up to theft.

First, god forbid you are ever carjacked the car is gone if you have the fob with the key fob. Also even if you have the anti-carjacking option installed, the care might shutdown on them after they drive away. But having the IGLA key will allow them the opportunity to restart your Camaro and drive it away.

Granted if you keep the IGLA fob separate from your key fob then the above won't necessarily be a problem.

The other situation is if you are using the IGLA fob when dropping your car off for Service. This provides an opportunity for someone to steal the keys and then take the car. Better to set a temp pin, and teach your shop how to use. Then if for some reason the car is stolen, it is without a doubt an inside job.

If you use the pin code yourself, it is easy to train someone else to use. You know the rate to input the keys, and the signs your car makes when it is authorized. In my car I know the indicator lights don't flash everytime auth happens, but the beeps do without doubt. Also when you use the pin all the time, you become familiar with the pin change procedure and can change the pin effortlessly whenever you want. It really doesn't add much additional time before you can drive away, especially if your vehicle is set to allow starts but auth before being put into gear.

Also if really concerned about security, and didn't get these options when you had your IGLA installed, I'd recommend asking your installer enabling these options.
  • Anti-carjacking
  • Key Programming Block (This might be default on the newer firmwares) - IGLA needs to be either at least authorized and/or in Service Mode
  • OBD Block - This prevents anyone(dealer, locksmith, thief, etc) from connecting to computers in the car if the IGLA is not authorized and or in Service Mode
The above are really game changers for security.

Note: I am not entirely positive the minimum mode needed to disable some of the security would ask your installer. But know that Service Mode allows everything as the IGLA is basically disabled.

Hope this is helpful!!
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