2010-2017 GMC Terrain Mark II Shark Fin Antenna (Custom Painted: Black Licorice/Jet Black 19/19U/990A/WA990A) This sharkfin also accommodates "Larger Sized Antenna Bases that incorporate OnStar, XM/Sirius, Cellular, or GPS antennas. Custom painted to match your color and color code. Color Code is listed on the product title above. Easy Installation Antenna Type: Mark II