2004 GMC Sierra 2500HD Consumer Discussions

Chevy Silverado and GMC Sierra Duramax Fuel Mileage

Re: Well I purchased the 2006 Dmax 2500HD 4x4 Crew, 3.73 [clongwell]

Written by: uhlenhakebrian on Oct 15, 2005 09:20 PM

Just curious if your mileage is calculated manually by you when you fill the truck or if you are reading off of the DIC. I have found that the DIC mileage is way off. I have an 2004.5 LLY motor in my GMC Sierra Crew Cab Short box. My lifetime mpg average at 15,000, calculated by me from fuel reciepts is 17.8, this was a mixture of highway and city. I just finished putting ... Read More...