The plush new 2013 GMC Terrain Denali goes on sale in the fall wearing a base price of $35,350, including destination. GMC will offer two powertrains in its most luxe compact-crossover SUV for the new model year. Last year's 264-horsepower, 3.0-liter V-6 has been axed from the model range entirely. The base 2.4-liter, 180-horsepower four-cylinder...

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