GMC C15/C1500 Pickup MPG

4 GMC C15/C1500 Pickups have provided 2 thousand miles of real world fuel economy & MPG data.
Click here to view all the GMC C15/C1500 Pickups currently participating in our fuel tracking program.

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Downshifting up hills

In a manual, only downshift as much as you have to. If you c... ...

by iDanoo

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