Xtune for 2007-2013 Silverado, 2014 2/3500HD Mystery Black/Smoked LED Tail Lights L+R Pair Left+Right/2008 2009 2010 2011 2012 2007-2013 CHEVY SILVERADO 2014 CHEVY SILVERADO 2500HD/3500HD 2007-2014 GMC SIERRA 3500HD DUALLY MODELS ONLY *[Attention: Not Compatible w/ 2007 Classic Models] *[Attention: For 09-10, Compatible w/3047 Reverse Bulbs Size Only (NOT 2 socket)]