Main battery fuse

Here are the fuses, right and left. The fuses are hot all the time. The problem must be on headlamp ground circuit. The headlamp switch is part of ground circuit. The drl module can also ground the headlamps. Something could be shorted to ground.

Your engine computer must hate you. Get your headlight circuit fixed, constantly pulling the battery cable off is begging for trouble, and voltage spikes can kill modules.

same happened to me. Bad daylight running lights photo cell on upper left side corner of dash. Google "How to disconnect daylight running lights chev tracker" and follow directions;