The all-new Chevy Silverado and GMC Sierra represent General Motors' (NYSE:GM) most important new-product launches in years. GM has made it clear that it's pulling out all the stops on this one, and that means a big ad blitz is coming to a TV near you.

In this video, Fool contributor John Rosevear looks at the latest news on GM's big launch -- and at some hints as to the shape of the massive marketing campaign that's about to be set loose on America.