Diesel Place : Chevrolet and GMC Diesel Truck Forums - View Single Post - What kind of hwy mileage are people getting?
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Old 01-04-2019, 08:28 PM   #47 (permalink)
Icutmetl
Clutch
 
Join Date: Dec 2017
Posts: 55

Roughly 1500mi on truck; cruise control set at 80-85 on long stretches of an 1100mi trip, I saw 15.5-15.7mpg.
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2018 GMC Crewcab All Terrain HD L5P
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