Hey guys, this is my first post, my first diesel pickup, and so greetings to all.

My truck is a 2005 2500HD w/ Duramax bought 6/1. The first 1,000 miles, the DIC said I got 17.4 overall. When it turned over 1,000, I reset it. Since then, overall, it's been 19.1.

Good points on slowing down above. That Allison tranny won't let me coast. I can see that driving habit changes will help.