My alarm keeps going off randomly it came on the truck new when I bought it in 2006. This started when we had a thunderstorm a few weeks back. Every things sets it off...motor cycles, car door closing, any and everything. What may be the problem?

 

Does it have a "Glass Breakage Sensor" hidden under the dash some place? If it does, they are adjustable for sensitivity or possibly, it has gone bad....

Set the alarm and strike a glass window with a firm hit, but not hard enough to break it, and the alarm should sound.... This will verify a Glass Breakage Sensor is installed.

My 2cents.