Jgundersen
Aug 1 2009, 08:01 PM
I have a 2004.5 (LLY) GMC Sierra 2500HD with a cold air intake and 4" exhaust. I have only had the truck for a month but expected to get more than 13mpg's. What kind of mileage are other people getting with similar trucks?
Viktor Agnar
Sep 25 2009, 11:47 PM
What tire sizes are you running, and what gearing is it ?
with that CAI your MAF might be leaving the party !
thearborbarber
Sep 26 2009, 09:12 PM
12.4mpg on average from my 2004 2500hd 4x4 with a 6.0 liter but you deisel should get closer to 20mpg empty. I would check fuel filter and water separator.
pwall
Sep 26 2009, 11:37 PM
Welcome!
And as in the previous post, you should be getting at least 20mpg, if not better.
Jgundersen
Sep 27 2009, 05:21 PM
I have 3.73 gears with 33" tires and have changed every fluid and filter from the front of the truck to the back in the two months I have owned it.
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