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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.

Motor Trend wheels the 2015 Corvette Z06

The new Chevrolet Corvette Z06 is capable of some absolutely wild metrics. Want proof? Carlos Lago from Motor Trend is here to break it all down. 60 miles per hour? 3.2 seconds. 60 to 0? 91 feet. Lateral acceleration? A staggering 1.16g, a figure that is the highest MT has ever recorded for a vehicle that isn't a race car. It's an utterly astonishing piece of work, this Z06, and just when you think it can't possibly get any more impressive, Randy Pobst hustles an auto-equipped Z06 around Road Atlanta in just 1:30. Aside from the eight-speed auto, Pobst's Z06 had the most aggressive aerodynamic package, the so-called Stage III. Take a look at the 650-horsepower Z06 in Motor Trend's latest video.

Here's how the EcoCAR 3 teams are going to green up their Camaros

Plug-in hybrids were probably not what the Dead Milkmen had in mind when they wrote their 1985 alt-punk classic Bitchin' Camaro (OK, we're not really sure what they had in mind), but we're certainly fans of the effort. The 16 college teams competing in the third version of the EcoCAR green-vehicle contest have declared which powertrains they will attempt to build for maximum environmental friendliness. They'll be working with 2016 Chevrolet Camaros that General Motors is donating to the competition. The US Department of Energy is also helping to fund the competition. Out of the 16, all but one will go with a plug-in hybrid powertrain which switches over from electric power to an engine powered by E85 (i.e., an 85-percent ethanol blend) when the juice runs out. Those schools include the University of Alabama, Arizona State, Mississippi State, Ohio State and Penn State. The lone dissenter is the team from the University of Tennessee, which is going with a hybrid vehicle powered by E10. This past spring, Ohio State was named winner of Year One of EcoCAR3, winning $10,000 in the process. THE Ohio State University (as students and alumni like to call it) also won the overall competition for EcoCAR 2 last year. The vehicle used in that project was a 2013 Chevrolet Malibu, and OSU also used a plug-in hybrid/E85 combo to take the big prize. Take a look at the list of schools and their powertrains of choice for EcoCAR 3 here. Related Video: