(Klaus?) After an "updated programming", some 03s and 04s get 13.5MPG?

[NV Hunter]

Sfox, I called the local Hummer dealer here in Las Vegas and simply told them that I learned of some upgraded computer programming that has helped some owners get better gas mileage and performance. The service guy acknowledged that he did know what I was talking about and told me to have them check my current programming the next time I bring it in for service and he would download it. I plan on printing out Paragon's and Gas guzzler's posts on the first page when I take it in to show what has been done in the past. Don't know if this helps answer your question.