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2021 Chevy Silverado, GMC Sierra fuel economy to go down due to global chip shortage

Production of the 2021 Chevy Silverado and 2021 GMC Sierra is continuing, but the global semiconductor chip shortage is resulting in a mid-year change. Or rather, an omission.  Basically, the availability of cylinder deactivation for the 5.3-liter V8 will be significantly reduced, resulting in a reduction of 1 mpg combined for affected models. This applies whether that engine has the six- or eight-speed automatic, as well as to both the regular Active Fuel Management and the more advanced Dynamic Fuel Management cylinder deactivation systems. DFM does remain with the pairing of 5.3-liter V8 and 10-speed automatic that comes standard on the LT Trail Boss and High Country. "Due to the micro controller shortage, the components that control AFM/DFM in the engine control module (ECM) have been removed," GM spokesperson Michelle Malcho told Autoblog. She also indicated that the engines will still have the AFM/DFM hardware in place, but that GM will not allow activation of the systems in the future with an ECM change.  Malcho also confirmed to Autoblog that the Silverado and Sierra's other engines will continue to have AFM and DFM, including the 2.7-liter turbo inline-four, 4.3-liter V6 and 6.2-liter V8. In an earlier statement to Reuters, she declined to say the volume of vehicles affected. "By taking this measure, we are better able to meet the strong customer and dealer demand for our full-size trucks as the industry continues to rebound and strengthen," Malcho wrote Reuters in an email. The change runs through the 2021 model year, she said. Malcho told Reuters it would not have a major impact on the Detroit automaker's U.S. corporate average fuel economy (CAFE) numbers. "We routinely monitor our fleet for compliance in the U.S. and Canada, and we balance our portfolio in a way that enables us to manage unforeseeable circumstances like this without compromising our overall (greenhouse gas) and fuel economy compliance," she said. GM's fleetwide fuel economy in the 2018 model year was 22.5 miles per gallon and was projected to rise to 22.8 mpg for 2019, according to a report by the Environmental Protection Agency. To meet federal CAFE requirements, automakers like GM often use credits from either earlier years where they faced less stringent rules and performed better than the requirements or buy credits from other automakers. GM said last month the chip shortage could shave up to $2 billion from this year's earnings.

How the Ram Multifunction Tailgate compares to Ford, GMC, Honda

Ram just announced its Multifunction Tailgate — a descriptive if not very creative name. It's an asymmetrical barn-door arrangement, which can both fold down like a conventional tailgate or swing open like a gate. There's a new bed step, but unlike Ford or GM, the step isn't part of the tailgate itself. Rather, it kicks out from under the bumper (as opposed to out from under the driver's side of the rear bumper in its previous incarnation). So let's just focus on the tailgate functionality. A video of the Ram Multifunction Tailgate in action is above. For one, either of the swinging tailgate sections can be opened independently. They open to a full 88 degrees. In conventional flip-down mode, the tailgate works just like a normal one, too, with a 2,000-pound rating. The bottom line is that while it gives a variety of types of access to the load area, it doesn't "do" anything else. It's a $995 option on any Ram 1500. Its closest analogue is the Honda Ridgeline, which works basically the same way, but on that truck the tailgate swings as one piece. And the Honda's load rating isn't as hefty as the Ram's tailgate: 300 pounds. As Honda says, that's sufficient to hold the weight of the part of an ATV hanging out of the bed, or something similar, but it's a lighter-duty unit (and a lighter-duty truck) than the Ram's overall. Let's also get Ford's one-trick tailgate out of the way before comparing to the more analogous, and complicated, GM MultiPro. A bit of trivia: Ford's optional Tailgate Step is actually designed and supplied by Multimatic, better known as the outfit that builds the Ford GT and produces the DSSV spool-valve shocks. This step has been available for years. It pulls out of the top edge of the tailgate when the tailgate is lowered, deploying a single step. A separate handle pulls out from beside the step and flips up, giving a handhold. While it was initially (and infamously) mocked by competitors, with load floor heights as high as they are it's better than toting around a stepstool. It's currently a $375 standalone option. Now we get to the GMC MultiPro tailgate, the most complicated and multi-functioned around. It's essentially a tailgate within a tailgate, with a fold-out stopper that deploys from the inner tailgate. This gives it several functions depending on the position of all the parts. It can still be used like a normal tailgate, dropping down at the push of a button or using the key fob.

GMC Hummer EV will be unveiled during the World Series and 'The Voice'

A big-time vehicle reveal deserves a prime-time multi-platform debut. At least, that seems to be the opinion of the folks tasked with reintroducing the American public on October 20 to the Hummer nameplate, this time affixed to pickups and SUVs that also wear General Motors' "Professional Grade" GMC badge. And instead of a standalone brand with dealerships full of gas-guzzling off-road beasts, this new, kinder, gentler and fully electric Hummer won't sip any gas at all. The debut will take place across several channels. As has been the de facto process during the pandemic, the event will be streamed online. But — taking a page from the reveal of the Ford Bronco this past July — it will also be witnessed by watchers of the World Series on Fox and "The Voice" on NBC (at least those who are watching live and aren't skipping commercials). Interestingly, according to The Detroit News the television segments will be spread across multiple commercial breaks as sort of a mini film. Naturally, we'll be covering the unveiling live right here on Autoblog, and we'd argue that's the best place to see it all unfold (we admit we may be biased). In any case, no matter where you watch you'll be treated to a host of details about what GMC is calling "the worldÂ’s first super truck." We know it'll boast 1,000 horsepower, go from 0-60 in around 3 seconds, have the next generation of GM's Super Cruise autonomy technology, have removable roof panels and be able to crab walk. Sounds pretty super to us, and we're looking forward to the full reveal in just a couple of weeks. See you then. Related Video: