I had my 2014 broken into while armed and also no alarm. I'm guessing they used either the tennis ball trick or had some other way to open the door. My daughter woke up to a clicking type noise and thought nothing of it and the next morning both my Grand Caravan and my Cruze were open with the doors barely closed, enough to turn the lights off but open and I know both were armed.
I decided to have a Python alarm added with interior sensors. If the burglars did not cause the vehicle to move the factory alarm has no clue.
I decided to have a Python alarm added with interior sensors. If the burglars did not cause the vehicle to move the factory alarm has no clue.