General Motors announced today that the 5.3-liter V8 found in both the GMC Sierra and Chevy Silverado has been SAE rated at 355 hp and 383 lb-ft of torque, and will get an estimated 23 mpg highway for rear-wheel drive models, and 22 mpg highway with four-wheel drive.

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General Motors arrived in Detroit this year with two big stories, an all-new Corvette, and a brand new pair of trucks – the Chevy Silverado and GMC Sierra – both of which just bowed on the show floor.

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