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GM delaying additional Silverado EV and Sierra EV production to Q4 2025

This looks like more "Gotcha!" news about storms in the EV sector, but the word "additional" is key here. The Detroit News reported today that GM is pushing delaying production of the Chevrolet Silverado EV and GMC Sierra EV pickups at the Orion Assembly Plant to late 2025, about a year behind expectations. The Silverado EV Work Truck is already in production at GM's Factory Zero in Detroit, which won't change. Retail versions of the Silverado EV are still planned for production at Factory Zero before the end of this year, and the Sierra EV is expected to enter production at Factory Zero early next year. This new plan simply means GM won't add more production of those electric trucks at Orion.  GM builds the Chevrolet Bolt at Orion right now, assembly of that groundbreaking car to end this year. GM's original idea was to spend $4 billion to convert Orion to EV pickup production in time to get its two giant profit makers rolling down lines in early 2025. The move to late 2025 could mean the plant is out of commission for about two years. The facility's 1,261 employees are being offered spots in other plants, including Factory Zero.  The automaker gave several reasons for the move, a spokesperson telling The Detroit News the company wants "to better manage capital investment while aligning with evolving EV demand," and telling the Detroit Free Press, "We're looking at EV demand and the trendline for EVs is stabilizing. ... It is not rising as fast as originally forecasted." On top of that, engineers "have identified engineering improvements that we will implement to increase the profitability of our products." The spokesperson also made it clear that the delay has nothing to do with the UAW strike, now in its 32nd day.  Factory Zero's working up to a near-term production capacity of about 600,000 units annually, GM saying it wanted to get capacity to 1 million EVs annually by the end of 2025. At the moment, the site builds the Silverado EV Work Truck, the GMC Hummer EV pickup and SUV, and the Cruise Origin shuttles — not the Bolt taxis, the autonomous pods. The Detroit News reported GM sold 18 Silverado EV Work Trucks in Q3 this year, GM Authority says GMC Hummer EV production has ramped up to about 3,000 units per month, and Cruise Origin is still waiting on approval from the National Highway Safety Traffic Administration to mass-produce the autonomous shuttles because the shuttles need an exemption for not having steering wheels.

'Killing a Duramax' Gale Banks YouTube series methodically tunes a diesel to death

Learning or perfecting a skill by watching YouTube videos is known as attending YouTube University. GM Authority picked up on one of the video site's more fascinating courses, hosted by Gale Banks; in a fair world, he should be referred to as Professor Banks when it comes to diesel engines and truck tuning. A few months after GM introduced the updated L5P 6.6-liter Duramax diesel V8 in the 2020 Chevrolet Silverado HD and GMC Sierra HD that ships with 454 horsepower and 910 pound-feet of torque, Banks decided he wanted to methodically tune the engine to death. The purpose of the resulting series, called "Killing a Duramax," is to push more power out of the engine in order to discover which parts break and when — or, as Banks puts it, force-feed the Duramax "until the crank hits the street and the heads hit the hood." With that knowledge, Banks can figure out all the weak points on his way to building what he calls a "Superturbo," that being a supercharged, twin-turbo race engine with more than 1,000 hp. What makes the series fascinating is Banks' knowledge, paired with the company's comprehensive iDash engine monitoring system that keeps tabs on a glut of parameters every step of the way. So for instance, you get Banks explaining the differences between inches of mercury and barometric pressure, how those are different from the water content of the air measured in grains, then showing those readouts on the iDash, then explaining in detail how they affect the air density in the Duramax system. The stock Borg-Warner variable turbo gets a lot of airtime — Banks accuses it of being "out to lunch" because he feels it's the weakest link on the engine. That turns into a turbo teardown and a deep explanation of performance pitfalls, such as when air pressure on the turbine begins to diverge from the boost pressure coming from the compressor. Banks says he can keep close tabs on where power's coming from, because the iDash monitors the horsepower contribution provided by the ambient air, the turbo, and the intercooler separately. The major changes so far are a stouter Precision 7675 turbo and TurboSmart wastegate (episode 5), a twin intake (episode 6), a custom liquid-cooled intercooler from a marine engine, a new GM oil cooler and synthetic oil (episode 10), and new injectors (episode 11).

Ford F-150, Chevy Silverado, Toyota Tundra flunk IIHS headlight test

The Insurance Institute for Highway Safety put pickup truck headlights to the test and found that the majority of them were equipped with subpar units. The 2017 Honda Ridgeline was the only truck to earn a rating of "good." The large pickup truck test was comprised of the: 2016 to 2017 GMC Sierra, 2017 Nissan Titan, 2016 Ram 1500, 2016 to 2017 Chevrolet Silverado, 2016 to 2017 Ford F-150, and 2016 to 2017 Toyota Tundra. The Sierra's headlights earned a rating of "acceptable," the headlights found on the Titan and Ram 1500 were found to be "marginal," and the ones on the Silverado, F-150, and Tundra were rated as "poor." IIHS claims the F-150 was the most disappointing out of the large pickup trucks as both its halogen and optional LED headlights failed to provide adequate visibility during testing. The Ridgeline (which earned a "good rating"), is usually considered a midsize or small truck, though IIHS included it in the field of large pickups. The headlights on the 2016 Chevrolet Colorado, 2016 GMC Canyon, 2016 Nissan Frontier, and 2016 to 2017 Toyota Tacoma, which made up the small pickup truck group, all earned a rating of "poor." The IIHS claimed the Colorado had the worst headlights of any truck that was tested, as the base vehicle's units were only able to illuminate up to 123 feet in front of the car. The Ridgeline's headlights, for reference, were able to illuminate up to 358 feet in front of the vehicle. To conduct its test, the IIHS utilizes a special tool to measure how far light is projected out of the headlights in different driving situations. The trucks' headlights were tested in a straight line and in corners, while vehicles with high-beam assist were given extra praise. The headlights on the pickup trucks also mimic the testing that was done on small SUVs and cars earlier this year. Next year, automakers will need to fit their vehicles with headlights that earn a rating of either good or acceptable to earn the IIHS Top Safety Pick+. Related Video: