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GMC Sierra 3500 HD MPG

117 GMC Sierra 3500 HDs have provided 2.3 million miles of real world fuel economy & MPG data.
Click here to view all the GMC Sierra 3500 HDs currently participating in our fuel tracking program.

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Tips

Lower your Aero Drag by going a Tiny Bit Slower

I figure 53mph is close enough to 55mph that other drivers w... ...

by ChewChewTrain

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