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draino76 · 02-26-2012, 10:04 PM

I know this is an old post, but would like opinions. I have an 09 2500hd with a 6.0. I regularly see 18 mpg highway the worst has been 14, once saw 21, depends on my right foot, and the wind, but I usually drive 70. I would like to have the dealership reflash the computer for better shifting, but with all the stories out there about poor mileage I'm reluctant to have them change anything. Are there others out there getting good milage and i shouldn't worry. Or shoud I leave it alone.
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02-26-2012, 10:04 PM	#5
draino76 FUJIMO Join Date: Dec 2004 Location: South Dakota Posts: 127	Re: 2010 Silverado 2500HD Fuel Economy I know this is an old post, but would like opinions. I have an 09 2500hd with a 6.0. I regularly see 18 mpg highway the worst has been 14, once saw 21, depends on my right foot, and the wind, but I usually drive 70. I would like to have the dealership reflash the computer for better shifting, but with all the stories out there about poor mileage I'm reluctant to have them change anything. Are there others out there getting good milage and i shouldn't worry. Or shoud I leave it alone. Posted via Mobile Device __________________ IF IT DON'T GO--CHROME IT!! I dont mind confusion, I create it!