4 stories across all model years, newest first.
October 8, 2026
Could saving money on red-dyed diesel cost you a diesel truck warranty repair? A reader asked whether putting red fuel in his Chevy pickup would void its factory warranty. That sounds like a simple yes-or-no…
Read story →October 5, 2026
Two DEF injectors. A redesigned exhaust system. Regeneration you can initiate while parked or driving. There is a lot more to GM’s new 8.3L Duramax than its horsepower and torque numbers. During GM’s powertrain event,…
Read story →September 24, 2026
With all the attention on GM’s new 8.3L Duramax, I did not want the gas engine to get lost in the shuffle. I spent time beside the updated 6.6L V8 at GM’s powertrain event and…
Read story →September 24, 2026
GM’s new 8.3L Duramax is a big engine, and I mean that literally. Walking around the display at GM’s powertrain event, I wanted to get past the headline numbers and see what truck owners will…
Read story →
