x2 what tomp said. I had the 2500 Avalanche and am getting much better mileage with the H2. On the other hand, I'm also getting older and racing from traffic light to traffic light has lost much of the appeal it once had so I've been doing what Johndjmix1 has been doing. My overall average gas consumption since buying the truck almost 3 years ago is 12.3 mpg city/highway and miraculously I'm still making it from here to there.
