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Accoring to Edmunds.com: Powertrain choices, traditionally a strong point, encompass everything from a frugal 4.3-liter 195-horsepower V6 to a muscular 6.2-liter V8 with 403 hp. Most Sierras, however, will be fitted with either a 295-hp 4.8-liter V8 or a 315-hp 5.3-liter V8. A four-speed automatic is standard across the board (except for the Denali, which gets a six-speed unit) and one may choose either rear- or four-wheel drive. Don't the 4.8L numbers fool you, the 5.3L gets the best fuel milage of the buch, by a long shot. IF, you can keep your foot out of the gas. This truck will bull a house if needed.

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βˆ™ 16y ago
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