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C7 alarm issue

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Old Dec 23, 2022 | 07:21 AM
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Default C7 alarm issue

Hello.... new C7 Z51 owner from the UK hoping to tap into the owner knowledge database!

The alarm on my C7 randomly went off when parked in my garage this week. I tried to stop the alarm with the key fob but it would only stop when I started the car. I had been trickle-charging it for a couple of days but that may be nothing to do with it. Key fob battery is new.

The car is now unlocked in the garage to make sure the alarm doesn't go off again and annoy the neighbours in the middle of the night!

Any thoughts? Dare I ever lock it again?!!
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Old Dec 24, 2022 | 10:34 AM
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There were some threads a while back on alarm issues. Not sure if this is an option for you, but some members went to the dealer and they were able to check what sensor set it off. A regular OBD2 reader wont do this.

A sensor was replaced and all good. In one case it was the rear defrost wires which are a part of the alarm system.
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Old Dec 24, 2022 | 11:45 AM
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There is a button near the driver's left knee that disables the alarms until the next ignition cycle. It is next to the hatch / trunk release button.

Ron

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Old Dec 24, 2022 | 01:16 PM
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Originally Posted by Maxpowers
There were some threads a while back on alarm issues. Not sure if this is an option for you, but some members went to the dealer and they were able to check what sensor set it off. A regular OBD2 reader wont do this.

A sensor was replaced and all good. In one case it was the rear defrost wires which are a part of the alarm system.
Thanks for the advice. I have the car booked in soon for a service and MOT at the UK supplying dealer which have GM trained technicians so will get them to dig a little deeper!
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Old Dec 26, 2022 | 10:16 AM
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Originally Posted by RonC7
There is a button near the driver's left knee that disables the alarms until the next ignition cycle. It is next to the hatch / trunk release button.

Ron

Thanks Ron!
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