Alarm issues

[dtruslow]

I hope this is in the right forum category.... I had my hummer locked, in the driveway, and I was inside the house. All of a sudden my alarm just went off. I stepped out side and shut it off then relocked it. A few minutes later it did it again. What is the issue?? Appreciate any help.

Doug

 

[alrock]

Is this an aftermarket alarm?