We take a look at the just unveiled 2015 GMC Yukon Denali and Yukon XL, and drive the Sierra Denali with the new Ecotec3 6.2-liter engine.
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General Motors is expanding the powertrain offerings of its Chevrolet Silverado and GMC Sierra pickup trucks.
Earlier this month, we posted how Americans have adjusted to the $4+ a gallon gasoline prices to the point they're buying so-called "gas guzzling" mid to full-sized SUVs at steady numbers.