One problem related to wiper has been reported for the 2013 GMC Sierra. The most recently reported issues are listed below.
The contact owns a 2013 GMC Sierra. The contact was driving at various speeds and noticed a wind noise coming from the window. The vehicle was taken to the dealer for diagnosis but they were unable to duplicate the problem, stating that the vehicle was operating as designed. The manufacturer was notified. The approximate failure mileage was 300.