I have had two Gas HD pickups in the last couple years a 2012 2500 CC with a 6.0 and a 2015 3500 CC with the 6.0. As far as resale, I came out great on the 12 and good on the 15. I sub .18 cents a mile on the 12 and .22 on the 15. I traded out of the 15 way early due to business requirements changing but I don't regret the gas purchases. The 2015 Duramax seems to get 3-4 mpg better doing the same work as the 6.0 3500. As my luck would have it, gas was more expensive than diesel here when I had the gas trucks. I buy another new diesel and it flip flops again. The new Duramax can really tow, no doubt about that.
