I have put about 50,000 miles total now on two different Silverado 3.0 diesel trucks. No issues with the motors or with the trucks themselves. I would agree with what other posters have said regarding mileage. 60-65 mph and minimal wind - will generally get 28-30 mpg. Faster or more windy, more like 25-26. I average about 24.5 mpg per tank with my mix of commuting/daily driving. I drive about 60 miles per day for work/personal use and that is probably about 70% highway/30% city. Very quiet and smooth motor and the 10 speed tranny works great with the 3.0 motor. Not a rocket off the line but plenty of pickup once it is in motion. Have a new Trail Boss with the 3.0 on order but it probably won't be here for another 6 months or so.
