The real excitement was with the 3.0-liter, inline six-cylinder Duramax turbo-diesel, making 277 horsepower and an impressive 460 foot-pounds of torque. This mill is mated to a 10-speed automatic transmission.
The Z71 package adds special shocks, protective skid plates, a more sophisticated transfer case for the 4x4, a sturdier air filter, and chunky all-terrain tires. If you're following along at home, the idea is to provide Silverado fans with a viable Ford Raptor alternative.
So what's the verdict?
Overall, I flat-out love the engine.
But let's first address the big issue: You can tow 9,300 pounds with this configuration, which is well down from the nearly 13,500 pounds that the mightiest gas-powered V8 Silverado offers.
That still isn't bad, though. The ultra torque-y Duramax feels abundantly powerful, doing a passable imitation of a much larger motor while presenting an appealing option for customers who want to pay less at the pump and don't need to haul houseboats.
I suspect the motor plus the Z71 pack would make for some exceptional off-roading thrills, but as with all trucks of this type, the best I can do test wise is to drive around in rain or snow and sometimes venture into muddy, unimproved parking lots.
The upshot here is that while I still prefer the Ram and the F-150, this diesel Silverado is my favorite number there. I were buying a Silverado, this would be my choice.