2015 GMC Yukon Denali Gets Two More Gears, More MPGs

Sami Haj-Assaad
by Sami Haj-Assaad

Fans of big SUVs will be happy to know that the 2015 GMC Yukon Denali will be capable of getting more miles per gallon thanks to an upgraded transmission.

Now sporting an eight-speed transmission instead of a six-speed unit, GMC is promising up to 22 mpg on the highway with two-wheel drive models, while four-wheel drive models manage 21 mpg on the highway. Not bad for a huge, eight-passenger SUV with a 6.2-liter V8 engine.

The new eight speed is described with smaller steps between gears, which should allow the car to get into its peak rev-range easily. GM also says that the new transmission has a wider gearing spread and a lower 3.23:1 rear axle ratio, which reduces engine speeds and fuel consumption, especially during highway cruising.

Tow ratings remain the same, up to 8,400 pounds can be towed by the Yukon Denali and 8,100 pounds for the Yukon XL Denali. The Denali still packs the usual suite of high tech features, including a wireless charging station for compatible phones, 4G LTE OnStar and a new IntelliLink infotainment system. The updated 2015 Yukon Denali and Yukon XL Denali models are priced from $64,965 and $67,665 and are now available at dealers.

Sami Haj-Assaad
Sami Haj-Assaad

Sami has an unquenchable thirst for car knowledge and has been at AutoGuide for the past six years. He has a degree in journalism and media studies from the University of Guelph-Humber in Toronto and has won multiple journalism awards from the Automotive Journalist Association of Canada. Sami is also on the jury for the World Car Awards.

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