Q: I have a 2009 gmc yukon SLT. I noticed my front lights slightly dim during the dark hours. Auto Zone diagnose my battery good at 9
I have a 2009 gmc yukon SLT. I noticed my front lights slightly dim during the dark hours. Auto Zone diagnose my battery good at 99%, and the alternator was fine. He said that my starter showed failed and the diagnosis number was 254, which he said was high and in the failing range. I don't know how accurate that is being that I got my truck a full inspection at the gmc dealership in November 2016, and everything under the hood was fine and passing. He said I need to take it to the dealership again. My truck starts fine with no delay in starting up. Could this be another issued like a electrical problem?
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Hi there. Typically when you have dimming headlights, it’s due to an electrical relay that is loose, damaged or faulty in some capacity. It can also be due to excessive dirt or a build-up of debris on the headlights itself. Typically this is a repair that is diagnosed by a dealership with newer vehicles, however you can have one of our professional mobile mechanics come to your location and complete a headlights are dim inspection at your location as well.
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