Application Summary: 2003-2006 GMC Sierra 1500 Base SL SLT WT SLE (Front) (Doors: 4, 2 & Body: Extended Cab Pickup, Crew Cab Pickup, Standard Cab Pickup); 2003-2006 GMC Sierra 1500 HD SLT SLE (Front) (Doors: 4 & Body: Crew Cab Pickup); 2003-2004 GMC Sierra 2500 (Front) (Doors: 4, 2 & Body: Standard Cab Pickup, Crew Cab Pickup, Extended Cab Pickup); 2003-2006 GMC Sierra 2500 HD Base SL SLT WT SLE (Front) (Doors: 4, 2 & Body: Crew Cab Pickup, Extended Cab Pickup, Standard Cab Pickup); 2003-2006 GMC Sierra 3500 Base SL SLT WT SLE (Front) (Doors: 4, 2 & Body: Extended Cab Pickup, Crew Cab Pickup, Standard Cab Pickup); 2007-2007 GMC Sierra 3500 Classic SL SLT WT SLE (Front) (Doors: 4, 2 & Body: Crew Cab Pickup, Extended Cab Pickup, Standard Cab Pickup); 2007-2007 GMC Sierra 1500 Classic SL SLT WT SLE (Front) (Doors: 4, 2 & Body: Crew Cab Pickup, Extended Cab Pickup, Standard Cab Pickup); 2007-2007 GMC Sierra 1500 HD Classic SLT SLE (Front) (Doors: 4 & Body: Crew Cab Pickup); 2007-2007 GMC Sierra 2500 HD Classic SL SLT WT SLE (Front) (Doors: 4, 2 & Body: Extended Cab Pickup, Crew Cab Pickup, Standard Cab Pickup)