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GMC Sierra 3500HD MPG

What is the gas mileage on a GMC Sierra 3500HD?

GMC Sierra 3500HD

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Determining which GMC Sierra 3500HD has the best gas mileage

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Speeding, rapid acceleration and braking can lower a GMC Sierra 3500HD gas mileage by roughly 15% to 30% at highway speeds and 10% to 40% in stop-and-go traffic.

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