My first GM since forever ago (almost 20 yrs), as I've had Dodge Rams the past decade. In my '02 CCLB Silverado, I notice when I lock (arm) the factory alarm, the dome light will come on for a second or two, then go off. Hit the LOCK button again and the horn chirps. Hit the UNLOCK, and it flashes the park lights 2x. I read somewhere that it should flash the DRLs or something like that when you LOCK it. Mine doesn't. Is this accurate? If it should flash lights or something, can anyone point me to info on diagnosing this? The DRL work, so it's not like they're bad or anything.. Thx!