GM Gives Trucks the XFE Treatment
While any move to improve fuel efficiency in full-sized trucks is a move in the right direction, you have to wonder if GM's straining at gnats while swallowing camels with their latest move: XFE versions of Silverado, Sierra, Tahoe and Yukon. The press release brags the changes make them "the most aerodynamic full-size pickups in the industry." To accomplish this, they'll install a soft tonneau cover on the pickups and extend the front air dam, lower the suspension, revise the chassis tuning, use aluminum in the wheels and engine and install low rolling-resistance tires. And what's the gain for all these changes? One whole mile per gallon on both the city and highway ratings, which "reflect[s] GM's quick adaptation to an evolving market that remains a very important segment." They haven't said how much all these changes will cost, but just like with the hybrid versions. it's bound to take a while to offset the additional cost with fuel savings.