5.7L Vortec 5700, of course!
The 2015 GMC Yukon has a V8 engine.
The 2004 GMC Yukon has a V8 engine.
The 2001 GMC Yukon has a V8 engine.
The 2008 GMC Yukon has a V8 engine.
The 2010 GMC Yukon has a V8 engine.
The 2006 GMC Yukon has a V8 engine.
The 2005 GMC Yukon has a V8 engine.
The 2009 GMC Yukon has a V8 engine.
The 2012 GMC Yukon has a V8 engine.
The 2011 GMC Yukon has a V8 engine.
The 2013 GMC Yukon has a V8 engine.
The 2014 GMC Yukon has a V8 engine.