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GMC Sierra 2500 MPG

103 GMC Sierra 2500s have provided 877 thousand miles of real world fuel economy & MPG data.
Click here to view only the GMC Sierra 2500s with MPG currently participating in our fuel tracking program.

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Tips

Open up intake and exhaust on older vehicles

Running a proper Cold-Air Intake or Short-Ram Intake can inc... ...

by VanCollector

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