Something about my DRL's has failed, and the headlights now stay on
after I turn the ignition OFF (unless I turn the headlight switch
OFF). I used to be able to leave the headlight switch ON all the
time, and the lights would go off when I turned the ignition off. I
have replaced the DRL module, but that did not cure it. Can someone
please tell me what else could cause this? Or can someone please tell
me where to go to find the answer?

Pete wrote:
Hi Pete...

Not a mechanic, just an old retired electrical guy, so take this
for whatever little it's worth...

Are you sure they're not staying on only for a minute or two, as
a courtesy to let you find your way safely into your house?

Try leaving them on, watch for a minute or two and see if they
don't turn of automagically.

Take care.

Ken

Thanks, Ken;

No, the lights do not go off automatically. If I leave the light
switch turned ON and turn OFF the ignition, the lights stay on until
the battery runs down. That's what happened the first time I noticed
the problem, and it continues after I replaced the DRL module.

When the ignition is OFF and I open a car door, the little LED in the
vent outlet on the dash blinks on and off. It did this before and
after replacing the DRL module.

Pete

Ken Weitzel wrote:

Pete wrote:
typical/normal (non-GM) car. GM has *way* "over-engineered" lighting
controls starting sometime during the past 7-8 years!