GM's new Chevy Silverado is already selling very well, but it'll need changes to comply with tough new fuel-economy rules. Photo credit: General Motors.

General Motors (NYSE:GM) is in the process of launching its all-new Chevy Silverado and GMC Sierra pickups, and the early word is that they're very good trucks. But GM is already planning the next Silverado and Sierra, and a new report suggests that they'll be very different trucks.

For one thing, they'll be a lot lighter, a necessary change to meet tough new fuel-economy regulations. In this video, Fool contributor John Rosevear shares the latest on GM's plans to make its big pickups much more efficient and looks at how rival Ford (NYSE:F) is likely to respond.

GM has had big success in China, but it might not be the best way to invest in China's auto boom. A recent Motley Fool report, "2 Automakers to Buy for a Surging Chinese Market," names the two global auto giants poised to reap even bigger gains as China's vast auto market continues to grow. You can read this report right now for free -- just click here for instant access.

Fool contributor John Rosevear owns shares of Ford and General Motors. Follow him on Twitter at @jrosevear. The Motley Fool recommends Ford and General Motors and owns shares of Ford. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.