Headlights won't go off

Asked by May 11, 2017 at 04:25 AM about the 2008 GMC Yukon XL 2500 SLT-2 4WD

Question type: Maintenance & Repair

1 Answer

5,105

Is it equipped with a Sentry system (the lights turn on at dusk, or off at dawn automatically)? If so, the system needs to be reset or the sensor on the dash (looks like a little dome about the size of a quarter) might just need to be cleaned off. Also most Yukon's will switch the lights off as soon as you turn off the vehicle. There may be an electrical issue (usually a sensor) within the ignition switch itself. Best way to find out, get the codes read. Auto Zone will do it for free or an OBD-II scanner is about $15 on Amazon. Best of luck!

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