Just wanted to say hello and introduce myself quick. Used to lurk here a few years ago when I owned my TBSS, which had a Texas speed tune and a few other mods. Currently own a 2009 GMC Sierra Texas edition, and it has been, by far, the vehicle I have been absolutely happiest with (maybe it's age? lol) it's stock, and the reason I am here is actually because I hope to be upgrading to a 2500 HD Denali diesel. I have never owned one before, so I hope to learn a lot about them (my knowledge is very basic, like how they work mechanically and how they differ from gasoline) but that's it.

The performance of the new duramax is pretty sick, so I am pretty pumped about it. Considering the basics for mods, like a blow off valve, (haha, just kidding!) exhaust and a conservative tuning device.

 

Welcome to the site. There is a lot of info to be learned in here.