General Motors is rolling out a new generation 6 V8 engine, with reports suggesting it will come in multiple sizes, including 5.7-liter and 6.6-liter options. The engine is expected to be used in the 2027 Chevrolet Silverado and GMC Sierra, with GM taking steps to address past reliability complaints. The rollout strategy for the new engine has been explained, although some details, such as where the engine will be built, are still being clarified.