6.6 Chevy gas engine
? For any one with the new chevy 6.6 gas . About what is your fuel mileage not towing ? If you have towed with it fuel mileage
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I have a 2020 GMC Sierra 2500 CC with the 6.6 gas. Got 6,000 miles on it, with about 2,000 towing a 7,000 lb RV trailer. Empty I get 15-16mpg if you baby it 17-18mph 10.5-11.4 towing I drive 65mph tops. I came from diesel pickups this is the first gas engine I'v had in 21 years. Love it. Not as powerful as diesel but it is no slouch. and none of the diesel emission headaches
