M Marcel New member Joined Jul 8, 2009 Messages 4 Reaction score 0 Points 0 Jul 8, 2009 #1 Hey i was wondering what fuel economy the 2001 GMC Sierra 2500HD 6.0L Gets?? thanks
P pbleek New member Joined Jul 8, 2009 Messages 3 Reaction score 0 Points 0 Jul 8, 2009 #2 About 10 in the city 12-13 mpg on the highway.
