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the cycling gauges is part of the computers self test at startup to be sure everything is functioning correctly..
GM had been using this for many years, I recall my 2000 Silverado did this..
If yours is not doing it I suspect there might be a problem, I doubt GM would discontinue the feature all of a sudden, but I could be wrong.
hopefully some other 2013 owners can chime in..
BTW my 2012 does it..
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