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Message: <blockquote data-quote="2025 Red Equinox" data-source="post: 30496" data-attributes="member: 11404">You mentioned the ballast in your original post.  Do you have the HID headlamps (high intensity discharge)?I have a 2014 Impala 2LTZ with the factory HID headlamps.  The ballasts (one each side) can retain high voltage like a capacitor.  Be careful if you begin checking headlamp wiring.I’d suspect from afar that the headlamp wiring was damaged and not repaired properly, with the cold causing the repaired area to not have full contact.Are you able to remove the radiator closeout panel (black plastic panel near hood latch) and look at the headlamp wiring?  You may be able to see the repaired area?  Can you crawl underneath and also look at the wiring with bright light?</blockquote>