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GMC Sierra 2500 HD MPG

771 GMC Sierra 2500 HDs have provided 14.6 million miles of real world fuel economy & MPG data.
Click here to view all the GMC Sierra 2500 HDs currently participating in our fuel tracking program.

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Tips

Wider throttle opening, lower RPM

Car and Driver magazine, whom I trust in many regards, have ... ...

by cmartin2470

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