https://www.cnet.com/roadshow/news/2019-gmc-sierra-1500-livestream-reveal-debut/

GMC will unveil the 2019 GMC Sierra 1500 pickup in Detroit today at 3 p.m. ET. We've embedded GMC's livestream above for you, in the event you're as big a fan of new truck tech as we are. These events tend to start on time, so show up a little early if you don't want to miss anything.

While we're not entirely sure what the new Sierra will offer, we can make some assumptions based on the Silverado. I imagine it'll look beefier and probably offer the same 3.0-liter I6 turbodiesel engine, in addition to a new V8 cylinder-deactivation system that can leave the truck running on just a single cylinder. Otherwise, expect more tech and less weight. Once the clock strikes 3, we'll update this story with all the salient details.