2007 CHEVY SUBURBAN INTERIOR LIGHT won't SHUT OFF, BATTERY GOES DEAD EVERY DAY, TRIED USING THE MANUAL OVERRIDE BUT IT DOES NOT WORK. CHECKED ALL THE DOOR LOCKS AND HANDLES EVERYTHING IS GOOD. ANY SUGGESTIONS PLEASE LET ME KNOW.

 

Do the lights turn OFF when you're driving?
If the manual override doesn't turn them off AND they stay on while driving, sounds like a bad BCM. The interior courtesy lights are controlled by the BCM.
If they turn OFF while driving, the override switch may not be working.