?Alarm goes off intermediately when its not locked?

[moosedaddy]

The alarm goes off intermediately when the truck is not even locked? It did this occasionally when it was locked so to try to figure out if it was a sensor I have been leaving the truck unlocked while at the office and my neighbors let me know that it still goes off for a bit then turns off or I turn it off.

Does anyone have a clue what this could be?

Thanks