I have a 2008 LT 4.2L 4x4 3.42s, bone stock. I bought it with 36K on it and am about to hit 47K in 6 months of ownership. I always log/calculate my mileage and have found that the mpg as calculated on the DIC always reads anywhere from 0.2-1.0mpg high.
When I got it back in the fall, I could...