Hi my name is Liz and I own a 2013 Yukon Denali 6.2L. I bought the Denali used 2 years ago with 33K miles on it and now it only has 49K. This is my 2nd Yukon and until recently have vowed to only purchase Yukons as they were my favorite SUV. Why until recently, you ask? Well, 2 days ago I was...