2014 Truckin' Throwdown
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New & Used Trucks
Under 20 MPG
Used GMC Sierra Under 20 Miles Per Gallon
If you’re looking for information on old GMC Sierra Truck models priced with Under 20 MPG, our buyer’s guide has the data you’re looking for. Select a year and submodel to read reviews, view fuel economy, towing capacity, engine specs, pictures, and more.
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