Fuel economy:15 cty/21 hwy
What's New for 2014 For 2014, the GMC Yukon XL sees the heavy-duty 2500 series dropped from the lineup, leaving just the 1500 series. Also, the SLE trim gets a number of newly standard features that include a remote ignition, rear parking sensors, a rearview camera, an auto-dimming rearview mirror and power-adjustable pedals.
Fuel economy:16 cty/23 hwy
What's New for 2015 The 2015 GMC Yukon XL is fully redesigned. Highlights include improved fuel economy, new standard and optional equipment including an integrated fold-flat third-row seat, updated exterior styling, a quieter interior and low-range gearing now available on the Denali model.