Hello guys, new to posting, long time lurker so decided to register, hoping you guys are willing to help a stranger. I have a 2003 SS and up till now it was running like a champ. The problem im having is with the horn/factory alarm. About 2-3 weeks ago the alarm (I assume) starting acting up in the sense that I would activate the alarm and it would honk once to acknowledge...but then it would keep honking. The only way to turn it off was to turn the car on. I found a way around it by just locking the doors from the inside before closing the car and then unlocking the with the key fob. Well fast forward to today and now I turn off the car and lock the doors and the car starts honking, even if i dont lock the doors it will start honking if its not on. they only way to stop it from honking is when its on or if its parked at the house i have to remove the horn relay fuse. Im hoping its only the factory alarm as I plan to replace that with a Viper alarm that I already ordered (one of my mechanic friends said it was the alarm). If its any use the only thing thats been done recently is replaced a dead battery about 2 months ago.

thank for any help any of you guys are willing to offer to help this crazy problem on an otherwise awesome car.

 

the bcm controls the horn/alarm and other features. at first i thought it was a short in your key fob letting the alarm button get power when the lock was pushed. but i dont know now that it allways goes off. maybe the bcm has something to do with setting it off all the time. or something to do with a sensor/ wiring to the sensor sending a wrong signal.