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GM pauses 3.0-liter turbodiesel production due to a supplier shortage

General Motors confirmed it has temporarily stopped taking orders for trucks and SUVs equipped with the 3.0-liter Duramax turbodiesel six-cylinder engine. It blamed the last-minute pause on a supplier-related shortage. Website TFL Truck first reported the news, and a representative from General Motors quickly confirmed it. The spokesperson explained the issue is due to a "temporary part shortage" and added that production will resume "as soon as possible," meaning the Duramax engine (which is called LM2 internally) is not going away permanently. Additional details are not available, so we don't know if the issue is related to the ongoing chip shortage. Rather than delay deliveries and create a backlog, General Motors is reportedly asking its dealers to encourage buyers who want a turbodiesel engine to instead select either the 5.3-liter V8 or the 6.2-liter V8, depending on the model selected. Both are gasoline-powered units. There's no word yet on when Duramax production will resume. The shortage affects several models, including Chevrolet's Tahoe, Suburban, and Silverado 1500 and GMC's variants of these trucks. Cadillac's Escalade is temporarily diesel-less as well. Heavy Duty variants of the Silverado and the Sierra are not affected because they're powered by a different Duramax engine with eight cylinders. Motorists seeking a full-size SUV powered by an efficient turbodiesel engine are temporarily out of options because the Tahoe/Yukon and the Suburban/Yukon XL had the segment to themselves. The Duramax was surprisingly popular, too: in May 2021, GM Authority reported that the turbodiesel straight-six represented 8% of Suburban sales and 6% of Tahoe sales. Installed in a rear-wheel-drive Tahoe, the engine returns 21 mpg in the city, 28 mpg on the highway, and 24 mpg in a combined cycle, figures that make the body-on-frame behemoth more efficient than the unibody, front-wheel-drive Chevrolet Blazer that's 20 inches shorter and approximately 1,700 pounds lighter. Related video: 2021 Chevrolet Tahoe 3.0L Duramax engine

Combine a self-driving car with V2V, and here's what happens

Transportation engineers have started laying the groundwork for a traffic world in which cars communicate with other cars and infrastructure like bridges and traffic lights. How about an environment in which cars talk to pretty much everything and everyone? In a preview of its offerings at the upcoming Consumer Electronics Show, Delphi Automotive will deploy just such a concept. Engineers have designed a system that communicates with traffic signals, street signs, pedestrians, cyclists, even to fry pits and parking garages along a driver's route. To date, engineers and researchers across the auto industry have focused on the technical and safety-oriented foundation of future vehicle-to-vehicle communications, which could help cars share information about everything from traffic tie-ups to upcoming road hazards. Beyond those building blocks, many have projected that V2V could also include more consumer-focused features. Delphi's system, dubbed V2Everything, might be the first that combines those sorts of features in a tangible package. At CES in Las Vegas, scheduled to begin the first week of January, company officials say they'll demonstrate in real-world conditions how V2V technology can be used in an autonomous vehicle to provide a range of critical safety information and leisure and convenience options for riders. The first V2V technology installed on a production car is slated to appear on the 2017 Cadillac CTS. "We imagine a world with zero traffic accidents," said Jeff Owens, Delphi's chief technology officer. "To get there, we will need a convergence of active safety, sensor fusion, connectivity platforms and advanced software." Such software might allow a vehicle to start searching for and reserving parking spots at a programmed destination long before arriving. It could allow riders to place their McDonald's drive-through order from the road and have the food ready for pickup along the route. For the drive itself, the Delphi-equipped car can stay updated on the status of traffic lights around Las Vegas, and can anticipate yellow and red lights. Using smart-phone technology, the car can detect pedestrians and cyclists that may otherwise be hard to see. It can send messages to friends or family to notify them of a driver's location. Some of those features have been available on third-party apps or individually developed by automakers. But this system marries them together in a single system that is tailored for use in self-driving cars.

Johan de Nysschen tells his side of the story

Automobile snagged time with ex-Cadillac, Infiniti, and Volkswagen of America boss Johan de Nysschen. General Motors decided to part ways with de Nysschen on April 18, 2018, after the German spent four years in charge of America's luxury brand. The longtime auto exec is a polarizing figure for enthusiasts, who seem to take a mostly negative view of his work at Infiniti and Cadillac. However, there's no denying de Nysschen is frank, and in the Automobile interview he puts an insider's perspective on a big bag of issues we can only speculate on. One of the biggest bombshells in the interview was that it wasn't de Nysschen's idea to move Cadillac to New York: "When I was recruited, I was informed that the company would relocate to New York," he said. Previous GM CEO Dan Ackerson had made the decision before hiring de Nysschen, then Ackerson let his new hire make the announcement. The big change came only two years after de Nysschen had taken over Infiniti after insisting Nissan's luxury brand move to Hong Kong. De Nysschen explained Cadillac's NYC move with the same rationale as Infiniti's Hong Kong move, so everyone assumed the new guy was doing his usual. He explains in the interview that after the move, "Folks who rooted for Detroit felt betrayed. Cadillac had an enemy." And that became a problem. He has nothing bad to say about GM or Cadillac, believing on the contrary that "GM is in a good position going forward." But he brought clarity to some of Cadillac's struggles. Among the issues was GM's "very vigorous" post-bankruptcy test for green-lighting a project. Another was the lack of specialization for the luxury arm. "Engines were generically developed with the Chevy brand in mind," he said, "and, then, 'Okay, well, yeah, it's good enough for Cadillac.'" That carried over into haphazard technology rollouts. "GM didn't have a specific technology roadmap aligned to particular brands," he said. "The process was, as they were developing new technologies, they would look at what product's launch date would be aligned with the maturation date and market readiness of a technology and go with it, whether Buick, Chevy, or what have you." De Nysschen worked to end such generalized approaches, which is how we get Cadillac taking the GM lead on technology and electrification.