1 999-2008 GMC Yukon;2012-2013 GMC Yukon XL 1500 / Yukon XL 2500;1999-2013 GMC Sierra 1500;1999-2000 GMC Sierra 2500;2001-2004,2006-2014 GMC Sierra 2500 HD;2001-2006 GMC Sierra 3500. 【 Installation】: The installation of the heater hose fitting is simple, connect one end to the heater core and the other end to the coolant pipe, finally, fix the coolant hose.
