The fuel-conscious Chevrolet Silverado XFE retains its crew cab and rear-drive layout for 2010, but gets a slight bump in highway fuel economy to the tune of 15 city/22 highway mpg. The increase is attributed to the new 3.08 rear axle and fuel saver mode helping the 5.3-liter LMG V-8.Other alterations for 2010 include now-standard side airbags, a USB port, revised interior door trim, and the StabiliTrak electronic control system.
Source: General Motors