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3242014 Chevrolet Silverado and GMC Sierra debut all-new designs, three new engines

General Motors has finally dropped the curtain on the 2014 Chevrolet Silverado and 2014 GMC Sierra. Both trucks have undergone substantial revisions with updated versions of the company's 4.3-liter V6, 5.3-liter V8 and 6.2-liter V8 engines. In a shot across the bows of both Ford and Chrysler, GM says it won't use a V6 engine adapted from passenger car applications. Instead, it developed the 4.3-liter engine based on its proven truck-duty architecture.

16SEMA 2007: Chevy Silverado HD Crew Z71 "Big Red"

Click the image above for more "Big Red"

28GM releases pics of Z71 package on GMT900 SUVs

Without so much as an accompanying press release, General Motors released a slew of new images yesterday that show us what the Z71 off-road package looks like on two of the three GMT900 model SUVs. The Avalanche, Tahoe and Suburban are available with a Z71 package that adds, of course, the Z71 off-road suspension, new 18-inch aluminum wheels mounted on combination on-/off-road tires, an automatic locking rear diff, and high-pressure shocks. That's it for the hardcore mechanicals, though buyers w

26Chevy Suburban with Z71 package surfaces

Some resourceful members of the GMInsideNews community managed to grab what appears to be official pics somewhere of a Chevy Suburban wearing the not-yet-released Z71 offroad package. Rather than being purely cosmetic, the Z71 package will add a host of real mechanical upgrades to the Suburban, Silverado and Avalanche. Of course, Chevy is still making sure its big SUV and trucks look the part of the rugged off-roader.

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