Crappy fuel milege!!

mybowtie

Duramax named Cheyanne!!
Jun 7, 2011
52
0
0
winnemucca
I've changed the oil and filter, fuel filter, done the 100,000 mile service and im still getting 11.8 in town. The Chevy dealership sais I have to re flash the computer to fix it what do you think? Its 80 bucks!
 

mybowtie

Duramax named Cheyanne!!
Jun 7, 2011
52
0
0
winnemucca
Not really, she has the same response she always had, but now that fuel guage just keeps droping like crazy 11.8 mpg aint right. 14 intown and 20 hw. is more better!