GMC Sierra 2500 HD MPG

454 GMC Sierra 2500 HDs have provided 7.7 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

Cool car interior quicker

If you use the A/C a lot, like I do, here are a few tips. Be... ...

by jgibbsjr

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