GMC Sierra 1500 HD MPG

12 GMC Sierra 1500 HDs have provided 78 thousand miles of real world fuel economy & MPG data.
Click here to view all the GMC Sierra 1500 HDs currently participating in our fuel tracking program.

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Tips

Drive the flow of trafic...

If found that driving ~65 MPH, oddly does NOT get me the hig... ...

by ICantDriveFiftyFive

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