Ive been looking for a late model used Tahoe/Yukon for my wife. The dealers all have 2011-2013s that have under 15K on them but they were all ex rental or fleet trucks that have no low range 4x4 and 3:08 rears. Is there anyone out there that has one of these ? I have a 2011 Sierra crewcab that has 3:42s and its kind of a dog as far as power. Is the Tahoe going to be worse ?