I'm new to this forum and am ready to learn more about the duramax. I own three diesel vehicles that I do all maintenance and repairs myself. I've had my 6.5L for over four years now and have had my TDI for two years. The duramax is definitely quite a creature of it's own as far as complexity compared to my other vehicles. I've owned my duramax for a little over a month now and it's a great vehicle!