2001 Isuzu Rodeo Car Alarm Program Code

I have a 2001 Isuzu Rodeo with a blinking red light on the left side of the steering wheel. I've been told the light indicates the alarm still works, but when I test it, the alarm does not sound off. Someone suggested I reprogam the car alarm, but I have only found program codes for the fob/keyless entry remote. All of the Isuzu dealerships in my metroplex have closed down since Isuzu went bankrupt. Any ideas on how to get the car alarm for a 2001 Isuzu Rodeo working, again? I think I need the program code, but I'm not sure. Please help!

Did you ever find out anything about the reprograming the car alarm???