What are the chances that this is a car alarm instead of a remote starter? The reason I ask, is I was in the car last night trying some programming methods I found on Google, plus some general pushing and mashing of buttons, and I found out that once I lock my car doors with the GM remote, (two quick pushes of lock button so the horn honks) if I then unlock the door manually (I was inside) and then open the door, or try to start the car, the horn goes off as it would in a normal car alarm. Going to try the two pushes thing and see what happens.
