GMC Sierra 2500 MPG

35 GMC Sierra 2500s have provided 524 thousand miles of real world fuel economy & MPG data.
Click here to view all the GMC Sierra 2500s currently participating in our fuel tracking program.

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Tips

Diesel owners - Clean your injectors

Use a decent injector cleaner on your diesel engine. 200 m... ...

by TangerineTractor

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