I have been reading some of the posts in this topic and I am curious why is my truck getting such a horrible mpg. I picked up my truck this past October and i was getting an average of 16-19.5. Now that it is winter i am getting 12-13. I drive 20 miles to work, mostly highway. I Did some mods to the truck such a RL leveling kit, Amp research power steps, bug deflector and windows visor etc. I tried 93 octane as well as 87 and no difference in mpg. I want to mention though that I am only going by the what the display is showing, I have not calculated my mpg manually. I still think that it is very low compare to what some of you are getting. I also want to point that I only have 600 plus miles on the truck and it is a crew cab with standard bed and the Z71 package and a 3.08 axle ratio.
Any ideas, what could be the cause.
Thank you
Luis Berroa