Slot above the headlight switch ?? - 2014

Inside a Slot Machine with Danny Britson - Reno sierra slot Slots at the Grand Sierra Resort ; Grand Sierra Resort and Casino 11,488 reviews ; Peppermill Resort Spa Casino 12,116 reviews ; Atlantis Casino sierra slot Got my New AT4 and learning all the bits and pieces and I find a slot GMC CANYON AT4 GMC SIERRA 1500 AT4 GMC SIERRA HD AT4 GMC YUKON AT4

sierra88 slot Hi I have searched my owners manual and found nothing about it, my 2015 GMC Sierra 2wd Standard cab 8 foot bed base model has a slot opening