Headlights remain on both after shutting off engine and headlight switch off, doesnt matter what position the headlight switch is in ,in the switch off position with engine off and driver door open headlight warning tone does not operate, the tone does operate when the light switch is in the on position and driver door open. if headlight switch is off, headlights are on but tail or side marker lights do not light up in any state the bright switch, dash lights and dash light dimmer operates normally as well as blinkers and interior lights.
Headlamp relay contacts could be stuck together causing the headlamps staying on , or the lamp control module is bad .
SOURCE: Door Ajar Warning Light Stays On
Our Ford Expedition & an Olds Silhouette Premier & both did the same thing. Someone online said to spray the inside door where the metal connects with the frame & sensors are there with WD-40. We did & it fixed the problem. Maybe this will work for yours.
SOURCE: change headlights 96 oldsmobile 88
some cars have a plastic cover over the headlight area, all you do is pull it off. it's velcro. you don't need much room because all you need to do is twist the bulb and pull it out.
SOURCE: Security System
You need to go to autozone or advance and do an obd2 scan. This will give you codes so you can plot your next course of action. It will tell you if a sensor or something else is faulty
SOURCE: Headlights problems
first, make sure the bulbs are in good and snug, 2nd, make sure the wire harnase is plugged in snug.
SOURCE: 2000 olds sillouette, headlights on, no brake/turn signal light
i would chk. break light switch. should be under dash above break pedel arm. emergency flashers will be on its own fuse, turn signals should have own fuse. as far as interior lights surging that could be ground or alt. chk. battery cables make sure clean and tight. not good idea unhooking bat. cable when running, one spark or surge to computer could burn up computer. besides that realy won't tell you anything if a diod is bad in alt. it may not show up until you tax the system. its best to take it someware like autozone, or any major auto parts store and have it chk.
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