Factory Alarm is going off for no reason

[Ryan6769]

The factory alarm on my 2018 Yukon Denali has been going off at random the past 3 nights. Every time it’s happened at night. 9pm one time. Then between 11-11:30 the other two nights. Tonight it went off 3 times in about a 10 minute window. First time it’s happened more than once.

My model has the interior motion sensors and I just went out and turned them off.

Has anyone else had this problem? Only 5k miles on this thing — shouldn’t be happening! It’s glitching. Doesn’t happen during the day at all.

And no, no one is breaking into it.

The horn is honking and the high-pitch siren is sounding as well.

Any insight, guys? My neighbors have got to be getting mad at this point.

 

[swathdiver]

No cat or raccoon footprints on the truck either? Could security lights on the house going on and off be setting it off?

 

[dbbd1]

Raining heavily?

 

[Mad Maxx]

My new '18 Denali has done it twice now as well for no reason.

 

[Ryan6769]

Interesting. I wonder why?

To update, I’ve been deactivating the interior motion sensors since and it hasn’t happened again. However, I didn’t do that tonight and so far nothing.

To answer those above — no animals are getting in the way and it has been raining but that shouldn’t do it.

 

[Doubeleive]

I have read about this before on the 2015+ and in most instances it was blamed on low battery power, odd as it may seem your battery shouldn't be going bad already, but just something to take into consideration for whatever it's worth.

 

[gSwift]

I recently got back in town from a 2 week trip and when I returned and unlocked the door on my Denali, it beeped a few times and the display showed a theft attempt detected or something like that. It was garaged the whole time. It a 2018 with 3500 miles.

 

[kiboater]

My 2016 Denali did this a year ago several times one night for no apparent reason. However it has been a year with no false alarms. Parked on an open parking deck.

I wonder if the computer records which sensor caused the issue and the dealer could focus on a repair based on this info?

 

[MaizeNBlue98]

I have the very same problem. However, mine goes off with vibration, I think... I park my 2018 Denali about 10 yards from a commuter and freight train line. During the week it goes off a couple random times every week. Seems to go away if I turn off the motion sensor for some reason. No other resolution found yet.

 

[Colorado_Coonass]

I had a bug flying around in mine one night, it drove me crazy.