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Posted

The right signal light in our 2020 GMC sierra company truck is turning on and off by itself and noticed well getting gas that it turned on and back off again when there was no one inside the truck and the keys were also outside of the truck 

Posted

So it’s the LEDs for the turn signal just on all the time? Had that before on a new Acadia but it was for the blind spot detection.

Why you no take to dealer though?

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