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GMC Sierra 3500 MPG

26 GMC Sierra 3500s have provided 265 thousand miles of real world fuel economy & MPG data.
Click here to view all the GMC Sierra 3500s currently participating in our fuel tracking program.

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Tips

Cruise as much as possible!

When going on highways, even though speeding at 70 or 80 may... ...

by Khoifishh

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