Xtune Ver2 for 2003-2006 Silverado, 2005-2006 Sierra, 07 Classic Smoked LED Tail Lights Signal Pair Left + Right 2004 2005 2003-2006 CHEVY SILVERADO ; 2007 CHEVY SILVERADO CLASSIC 2005-2006 GMC SIERRA ; 2007 GMC SIERRA CLASSIC *[Attention: Not Compatible w/ 2003 3500 Models & StepSide For Silverado] *[Attention: For 2007 Will Compatible w/ Classic Model Only ] *[Attention: Compatible w/ FleetSide Model Only For Sierra ]