I recently sold the '14 Silverado I bought two years ago and found this to replace it. It's a 2001 Chevy Silverado ccsb with the duramax and 5 speed Allison transmission, close to fully loaded for the day. I'll tell you what, I could get used to how the diesel pulls! Accelerating is much more fun than any gas pickup I've owned! Anyways, it's got 260k miles and seems to be all original, no smoke, ever. Cold start, fires right up, no smoke. Punch it off the line, no smoke. That said, I'm not sure if it's been tuned or not, as it has an egt and boost gauge on the A-pillar, but no programmer of any kind that I can see.
First item of business: tires and fluids/filters. Then fix the fuel gauge, as it sits on E and won't move from there.

First item of business: tires and fluids/filters. Then fix the fuel gauge, as it sits on E and won't move from there.


Good thing that didn't fail while I was goofing around on some mountain roads on Saturday...