97 Cadillac Deville


#1

We recently bought a 97 Cad Deville, drove a few days and woke up to find the headlights stayed on all nite and ran down battery. My husband bought a repair manual and changed the headlight relay switch. Lights still stay on. I have heard from a car parts place it may be the twilight sentinal system. He’s a retired GM guy but this Caddy has everything on it and we’re used to Chevy’s. Any feedback will help!


#2

Have you tried to operate the twilight sentinel or turn it off? Probably can’t be operated. If not that, the headlight delay?