![Antenna Adapter That Connects from an aftermarket Antenna or FM Modulator to The OEM Factory Radio from a GMC, Sierra, 2007, 2008, 2009, 2010, 2011, 2012, 2013](http://gtaudiophile.com/cdn/shop/products/41SIiBbM_2B2L_9c588722-26bf-449f-bc87-c28fbfc8cf36_{width}x.jpg?v=1584557161)
Allows you to connect an aftermarket antenna to the facory car radio from a SIERRA. Works with these years 2007, 2008, 2009, 2010, 2011, 2012, 2013
Allows you to connect an aftermarket antenna to the facory car radio from a SIERRA. Works with these years 2007, 2008, 2009, 2010, 2011, 2012, 2013