One problem related to wiper has been reported for the 2015 GMC Sierra. The most recently reported issues are listed below.
The contact owns a 2015 GMC Sierra 2500. The contact stated that the visibility in the headlamps was not illuminating properly in order to be able to view the road. The vehicle was taken to a dealer where they did not diagnose or repair the failure. The manufacturer was made aware of the failure. The approximate failure mileage was 1,200.