Spied! Heavier-Duty Chevy Silverado Caught Testing
Our spy photographers have caught what they believe is the next-generation GM heavy-duty trucks doing their hot-weather and high-altitude trailer testing.
Many reports have the lighter-duty Chevy Silverado/GMC Sierra powertrains slated to eventually run an eight-speed transmission, but they are likely to debut with a new six-speed to start. The HD models, we hear, are not likely to offer the eight-speed transmission with any engine option. However, we have heard some reports that that GMC may offer a 1500 HD model (presumably based off a 2500 HD platform) to compete better with the Ram 1500 Tradesman HD, which also uses a three-quarter-ton platform.
There's no question the 2500 and 3500 pickups will likely get any or all of the lighter-duty 2014 Silverado/Sierra interior upgrades, given that the HD interiors remained relatively unchanged when they received the significant chassis and suspension changes for the 2011 model year.
The HD trucks will likely come to market about a year after the 2014 Silverado/Sierra 1500 debuts, with the plants in Flint, Mich., and Fort Wayne, Ind., scheduled for machinery changeover starting in 2013.
From the looks of these photos, these test units are running gas engines and hauling a fairly heavy load. We have our moles digging for any details that you might find interesting, but there is a tight lock-down on all information regarding these vehicles, so the news to date is pretty thin.
QUICK UPDATE:
InsideLine.com got a hold of some video footage of the new GM light-duties testing in Colorado and they seem to think the new 2014 Silverado and Sierra 1500s will debut at the 2013 Detroit Auto Show in January. It makes sense but we'll see.
For now, click here to check out the video.

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