Now I had a auto start installed on the truck like 7 or 8 mths later the locks started to flicker in lock on its own in its draining my Optima battery constantly so I unhook the neğative cable every night to pervent from battery drainage problem what can I doe to fix that I can't remove the BCM it's latched a certain kinda way I cannot remove it s so,, xwzwM said s

all bcms can be removed. Look closer at the attachment. Check for drain as in this video, and if it goes away unplugging the BCM wiring harness, replace it https://www.youtube.com/watch?v=B__DqK90IIc