For the figure hungry: here are some numbers. The 3.0-liter Duramax makes a reasonable 277 hp and a stump-pulling 460 lb-ft of torque. Most impressive is that this 3.0-liter diesel makes that peak torque number at 1,500 rpm and carries it to 3,000 rpm. That power goes through a 10-speed automatic transmission to either the rear wheels or all four.
Historically, diesel engines are known for their grunt and not for being refined. Well, that stereotype has been fading for the past decade, and the 3.0-liter Duramax powering these Silverado pickups might be proof that these oil-burners are now fully domesticated.
In fact, the new Duramax diesel is almost too quiet. The engineers at Chevy worked to get rid of the clacking diesel noises with tricks and a heavy-handed application of sound deadeners. At worst, you might just think this is a straight-six gas engine that’s a little low on oil. There is a faint whistle of turbocharging, which is always a pleasant noise.
Power delivery is similarly refined, with the immediate peak torque playing a part. There are no odd shakes or rattles as you put the hammer down; acceleration is linear and predictable. The diesel also carries the Silverado well past the peak torque figures and doesn’t feel gutless as you push the engine to its 5,100 rpm redline