Problem with anti theft system
 

I have a 2011 Chevy camaro v6 RS . I have had NO problems with the car until now. I had remotely started my car today to get it to start warming up and popped the trunk to put some items in it. When I walked towards it to put the items in the trunk while my car was running and the trunk open, my car alarm randomly went off. I had the key fob in my hand so I thought I accidentally hit the panic button. But nothing I pushed on my fob was turning off the car alarm. I had to physically put the keys in the ignition to get it to stop. So I thought it was a fluke and got to my destination and locked my car using the fob and started walking away from my car and all of a sudden my alarm went off again. Now I have my car keys in my ignition in my car in the garage to prevent the alarms going off! I searched all the forums and can't find anyone with this same problem. There's no codes being shown, nothing is popping up that anything is wrong. Please help!!