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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.

GM hard at work on Chevy Silverado and GMC Sierra PHEV pickups

Autoweek heard from sources at General Motors and Ford about how each automaker is addressing the dip in EV enthusiasm and sales. At General Motors, AW reports, "plug-in hybrid versions of the Chevrolet Silverado and GMC Sierra are headed to market, in a hurry." The sources gave no timeline for when the trucks might appear. GM CEO Mary Barra told analysts during GM's Q4 2023 earnings call, "Let me be clear, GM remains committed to eliminating tailpipe emissions from our light-duty vehicles by 2035, but in the interim, deploying plug-in technology in strategic segments will deliver some of the environmental benefits of EVs as the nation continues to build its charging infrastructure."  It's too soon to predict how the Chevy Silverado EV and GMC Sierra EV will fare on the market, the Silverado EV Work Truck still the only one available to customers. It might be better for GM if they're not too popular at first, the automaker's cautious EV production ramp-up and recent software setbacks responsible for some still-healthy reservation rolls. Barra said the company plans to build between 200,000 and 300,000 EVs, this year, which would clear that backlog. Heading into the end of February, with the Chevy Bolt out of the picture and additional EV pickup production pushed to 2025, our Spidey senses feel those are optimistic numbers. The Chevy Bolt was the third-best-selling EV in the U.S. last year, at 62,044 units. GM didn't have another vehicle in the top ten. Furthermore, the combined sales of every EV in the top ten after the Bolt — seven models from six manufacturers — is only just over 200,000 units. The Blazer EV and Equinox EV could make it happen, but there's no way Chevy wants to rush those, the Blazer EV still in software purgatory.   The report speaks of collateral damage, GM said to have canceled an electric pickup sized below the Ford Maverick and Hyundai Santa Cruz. Automotive News said it saw the truck in January 2023, describing it as a futuristic two-door with a low roof and a 4.5-foot cargo bed. A new full-size van program supposedly got the axe as well, eliminating the plan to put a new Chevy Express and GMC Savana on a Brightdrop EV chassis. Over at Ford, AW says its sources mentioned another canceled midsizer; Ford's apparently stopped working on an EV pickup sized a bit below the Nissan Frontier.

McLaren and Alonso will use Chevy engines at Indy 500

Fernando Alonso will have a Chevrolet engine in his McLaren when the double Formula One champion attempts to win next year's Indianapolis 500 in his second attempt, the British team announced on Tuesday. The 37-year-old Spaniard led 27 laps last year on his debut at The Brickyard in a Honda-powered Andretti Autosport car before retiring with an engine problem with 21 laps to go. The 2018 Indy 500 winner, Australian Will Power, won with Chevrolet-powered Team Penske last May. "Having Chevrolet power behind me means we're putting ourselves in the best possible position to compete at the front," said Alonso in a McLaren statement. The double Monaco Grand Prix winner, who won the Le Mans 24 Hours with Toyota this year, left Formula One at the end of the season last month and is targeting Indianapolis as the final part of the "Triple Crown of Motorsport": winning the Formula One championship (or Monaco), Le Mans and the Indy 500. The late Briton Graham Hill, also a two-times Formula One champion who died in 1975, is the only one to have done it, completing the triple in 1972.Reporting by Alan BaldwinRelated Video: Motorsports Chevrolet McLaren Racing Vehicles IndyCar