Adding to Factory Alarm

I have a 2002 Chevy Z71 with a factory alarm that sounds if the door is opened without a key or the alarm remote when armed. Is it possible to add a glass break sensor, a shock sensor and additional sirens to the existing factory alarm. I have been told yes and no from different installers so I need help. The additional siren(s) will be placed inside the cab to cause pain to the intruder and hopefully deter them from sticking around to look for valuables. I don't need install instructions, just an answer as to if it is possible or not. Thank you very much for your time.

You can wire it in so that the trigger wires for the sensor trigger's a relay that will pulse the door wire. This way, it thinks that the door is opened when the final trigger of the shock or glass sensor is engaged.Jeff

Velocity Custom Home Theater

Mobile Audio/Video Specialist

Morden, Manitoba CANADA