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Fuel mileage for a 2003 gmc 2500hd duramax?
can anybody tell me average fuel mileage for a 2003 gmc 2500hd duramax compared to the 6.0 liter . I Know fuel prices are high so I dont want to hear about them I use a truck as a truck for towing and hauling
I know mileage on the 5.3 and 4.8 Just not experenced in the 6.0 and 6.6 duramax
1 Answer
- Anonymous1 decade agoFavorite Answer
The 6.0 liter gets 12 in town and 16 on the highway.
The 6.6 liter gets 18 to 20 combined and that is all that I could find.
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