shane_th_ee
Full Access Members
Well, the Denali and the Escalade (and the Tahoe RST) all get the 10 speed for 2018 and those fuel economy numbers are out. According to GMC's website, they're not claiming any improvement over the 6 speed... And seriously, does anyone buying this size/price of vehicle really care about a one or two mpg difference on the sticker of your vehicle?