Car Alarms: Alarm sounding off, chevy trail blazer, 2003 chevy trail blazer

Question
Hi,  I'm working on a 2003 chevy trail blazer. The factory alarm is sounding the horn intermittently throughout the day. I do not believe the lights are flashing with the sounding of the horn. I have no problem getting in the vehicle with the key. I have no problems starting the engine. There is only the spare key and no key fob with the vehicle. The horn seems to go off by itself after starting by itself. Mind you this is all intermittent. Are there any problems off the top of your head you can think of on these vehicles. I would appreciate you input.  Thank You.

Answer
Ah, sorry I do apologize,
but my expertise is in after
market vehicle alarm systems.

If yours is indeed a factory system,
I suggest talking to one of the
techs in my Forum about this one.

Please go to www.INSTALLSUPPORT.com
re state this inquiry there.
I am certain my guys will be
happy to assist if possible.

I hope you find the answer/solution
to your issue.

Regards,

ALARMTEK/CARPROTECTOR.COM