Random alarm sound when temperature is below 50°

[alliston engran]

Maybe I can get some help on this. My factory alarm will randomly go off when the temperature is below 50°. Took the truck to chevy and as told they couldn't find anything. Any ideas on where to start looking  would be great. Thanks in advance 

[BO TIE 1]

I had this happen to me on my 2018 Silverado. Alarm would just randomly go off. Changed the hood latch and all is good. Hope this helps.