Dirtybird31

Passenger side view mirror on a 2014 sierra power mirror led turn indicator. The glass portion slides onto a plastic then snaps onto the gimbal. I have 2 little black wires connecting behind the upper left side on the backside. Is this for the auto dimming mirror?

Notice the same rpm range on mine. Going to the dealer on Thursday. Almost 18,500 will ask about the spark plugs and ignition.