The GMC Sierra is a tough truck to say the least, but its larger siblings make it look like a pipsqueak, especially when equipped with the new diesel engine. The available 6.6-liter Duramax turbo diesel V8 engine comes with more in store for drivers than ever before. Here’s a quick rundown of the benefits of the GMC Sierra HD Diesel from us here at Warsaw Buick GMC.
The new 6.6-liter Duramax turbo diesel V8 engine comes mated to an Allison six-speed automatic transmission and churns out a massive 910 lb-ft of torque. That power creates opportunity when it comes to towing capacity and the Sierra 3500HD delivers with up to 22,900 pounds when properly equipped.
Even though the new turbo diesel V8 engine delivers more power and torque than its predecessor, the engine still produces 35% fewer emissions. Keep in mind that diesel engines are already some of the most efficient powertrains on the road, and this one is clearly no different.
Test drivers generally agree that, despite all its power, the turbo diesel V8 engine is surprisingly quiet. The refined engine offers a quiet ride, even when revving and towing immense loads, although drivers may hear a low rumbling from time to time to remind them just what lies beneath the hood.