Just read the new Truck Trend magazine... Seems Ford didn't like it that the Duramax was now rated at 397-hp (a few hp above Ford), so they are now offering a factory power tune to those who previously bought the 2011 PSD that adds just enough power/tq to squeak by GM with 400/800....

The TT article on the GMC Denali 3500HD said it would maintain speed on a 16% grade even with a 12k trailer in tow... I wonder what GM will do for 2012? Maybe 405-hp???

Jim