GM Unveils Next-Gen V8 Lineup for 2027 Silverado and Sierra

General Motors unveiled two new V8 engines for its next-generation pickup trucks, doubling down on gasoline-powered vehicles as demand for electric vehicles declines in the United States.

The improved V8 engines will be available in the 2027 Chevrolet Silverado 1500 and GMC Sierra 1500 when the redesigned trucks arrive at dealerships later this year, the Detroit automaker said on Thursday.

The new lineup includes a 5.7-liter and a 6.6-liter version. GM said both offer more power and torque than the models they replace while incorporating new technologies to boost efficiency and reduce emissions.

The engines are the sixth generation of GM’s Small Block V8, a product that dates back to 1955.

“They’re engineered to provide truck customers the confidence and performance they expect from a GM V8,” Tom Bishop, GM’s chief engineer for Small Block engines, said in a statement.

GM is also retaining its diesel option for the newest Silverado and Sierra. When paired with a larger 34-gallon fuel tank, the company said, the new diesel engine will provide more than 900 miles of estimated highway driving range.

The new engines arrive as GM continues to deal with problems involving the outgoing 6.2-liter V8 used in some of its current pickups and SUVs.

In August, the National Highway Traffic Safety Administration expanded an investigation to nearly 1 million GM vehicles after receiving reports of engine failures.

GM recalled nearly 600,000 vehicles in 2025 over the engine issue, but regulators said they had since received additional complaints involving vehicles both inside and outside the original recall population.

Automakers Adapt to New Reality

The new gasoline and diesel engines come as Detroit automakers look for ways to counter weaker-than-expected demand for EVs.

EV sales in the United States fell sharply after the federal tax credit of up to $7,500 expired on Sept. 30, 2025. Automakers have since taken billions of dollars in charges as they scaled back or reworked their EV plans.

In the second quarter of 2026, GM recorded nearly $2.3 billion in additional charges related to its EV restructuring. Ford wrote down a $19.5 billion EV-related charge last December, while Stellantis disclosed $26.2 billion in charges in February as part of a strategic reset that included a pullback from some EV plans.

At the same time, GM’s main Detroit rivals have increasingly turned to hybrids and other electrified powertrains for their light-duty pickups. Ford offers its PowerBoost hybrid system in the F-150, while Stellantis has the Ram 1500, an extended-range electrified pickup.

GM has largely stayed away from hybrids in the U.S. market over the past decade, although the company has said it plans to bring plug-in hybrids back to its U.S. lineup.

GM is not alone in betting on the full-size pickup market. On Wednesday, Ford unveiled its 2027 F-150, which gets a new 3.0-liter V6 as its standard engine in place of the previous 2.7-liter V6. Ford will also continue to offer V8 and hybrid powertrains.