Well my factory alarm worked perfect until about a month ago.. The keypad will still unlock/lock doors, and the panic button still sets the alarm off, but the alarm dont seem want to activate when i push the lock button on the keyfob. The truck used to make a beeping noise whenever the alarm was activated and it wont beep no more when the lock buttons pushed, and the alarm will not go off if the truck is tampered with, and I have no idea how to fix this problem. Any ideas?