Hey I have a 2000 Chevy Silverado 3500 crew cab with a 7.4 liter engine in it and I'm having this problem right now electrical wise. I think there is a short somewhere...the interior lights on the door panel turn on and off by themselves every now and then. Actually several times daily and nightly. they stay on for about 2 to 3 minutes and then they turn back off. there's no key in the ignition at this time. the car is not running. just all of a sudden this is what happens. Also when the alarm is set, locked up, the trucks alarm keeps going off and there's nobody even messing with the truck. it has a brand spanking new battery also, I start the truck up when letting it run you could hear flickering noise coming from under the steering column. what is this trucks problem? please help me? the neighbor wants to tow the truck away? thank you

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often a bad bcm does that, and also check the ignition switch to see if it's broken and leaving power in the system