GM’s 2027 Silverado HD and Sierra HD get an all-new 8.3L Duramax diesel, an upgraded 6.6L gas V8, and redesigned steering and braking systems.

The HD reveal comes just days after significant, mid-design cycle powertrain, exterior and interior upgrades to GM’s Chevrolet Silverado and GMC Sierra 1500 light duty trucks. Light duties now offer 5 ...

GM almost revolutionized pickups in the late 2000s with a high-tech Duramax diesel. It was eventually canceled due to the recession, but part of it still lives on in the new 8.3-liter "Mongoose." ...

General Motors just released updates for the 2027 Chevrolet Silverado HD and GMC Sierra HD.Leading the news is an all-new, clean-sheet 8.3-liter Duramax turbo-diesel V8 engine.Built entirely in-house, ...

I get a close look at GM’s all-new 8.3L Duramax diesel for the 2027 Chevrolet Silverado HD and GMC Sierra HD. GM rates it at 555 horsepower and 1,230 lb-ft of torque. We walk through water-to-air ...

A big new diesel engine is just one of several notable improvements coming to 2027 Chevrolet and GMC heavy-duty pickups.

In this case, more is more. GM built a powerhouse with its new heavy-duty pickup engine that makes 555 hp and best-in-class torque.

General Motors is staking its claim atop the hill that is Detroit heavy-duty trucks this week, introducing a new Duramax diesel that displaces a whopping 8.3 litres across its eight cylinders.

General Motors isn’t just redesigning its light-duty full-size pickups for the 2027 model year, as we’ve covered recently. No, the automaker is also making several major upgrades to the Chevrolet ...

The 2027 Chevy Silverado HD and GMC Sierra HD gain more gas V8 power, sharper control, improved towing tech, and an all-new diesel engine for serious work.

General Motors is putting renewed emphasis on gasoline-powered pickups as it adjusts its product strategy to changing conditions in the U.S. vehicle market.

GM didn’t give all of its engineering attention to the new diesel engine. The gas 6.6-liter V-8 has been updated, as well.