Park Avenue lights

I have a 1995 Buick Park Avenue. Head & tail lights won't go out when motor is turned off.

You must have the twilight sentinel system. Move the switch to max and back to min several times, then set it midway. Be sure you do not have anything sitting on the dash near the driver side defrost vent, that is where the sensor is located. If that don't work you may have a bad sensor or a bad timer switch.

Im not 100% sure, about 1995 Park Ave, but on my car 1997 Regal, when i turn of car and remove keys only the headlight stay on, the taillight turn off right away... there is a way to program the lenght of time the headlight stay on, look in owners manual...