Can a bad BCM cause "Security" issues?
 

I know that I am having BCM problems, as I have the awesome problem of my radio randomly turning on and off. But the other day my Security light came on in my dash and stayed on for about 3 minutes; it started up and ran fine. The car was not messed with as it didn't beep when I unlocked it (like when something causes the alarm to go off). The next day my motor refused to turn and my Security light stayed on. After locking/unlocking the car and turning the ignition several times it finally came on. Today the light came on but it still fired up right away. It usually will fire up no problem and cause no light, but this is happening more often.

So, does this sound like my BCM problem is getting worse?

Search vats issue. Also may try ordering a new key, you will need to test your current key to see what the resistance on the module is to order a new one

I deleted my vats so I know it itsn't that.

Has anyone had any issues like mine due to a BCM problem?

My brother had a problem with his windows and radio. He fixed it by soldering the BCM joints.

If you search BCM fix you can find a writeup.

If you need/want a new BCM, I have one off an 01 z28 along with the ignition lock cylinder and key.

Thanks man! I'm going to check it out soon and see if I can repair it. If not then I'll definitely send you a PM. I appreciate it :)

Id check out the Ignition Switch also.. there pretty cheep like 20 bucks..

BCM body control can cause secuirty but check secuity transmitter first for signal and voltage before you through a bcm in it