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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

Mary Barra thinks GM is a leader in autonomous tech

Saying General Motors is "among the leaders" in autonomous vehicle technology, CEO Mary Barra rapped about her company's driverless work in an interview with USA Today. Barra covered a number of topics, including well-known efforts, like Cadillac's upcoming Super Cruise technology, as well as hinting at "a lot of efforts that are confidential." "Things are moving quickly in autonomous [cars] because there's so many different pathways and the standards aren't even set. A lot of people can claim leads because people are making advancements in different areas," Barra said. "Next year we're going to have Super Cruise on one of our Cadillacs. On highways you'll be able to take your hands off the wheel and feet off the pedals – with a very creative way to make sure the driver is alert and involved in the driving process." As for those "confidential" efforts, feel free to speculate. GM has recently confirmed that it'd be running autonomous Volts at its Warren, MI tech center, which certainly indicates that the company is playing with much more than Super Cruise. GM will need to continue to embrace autonomous driving, owing to both traditional competitors like Toyota, as well as non-traditional opposition, like Google and Apple. Speaking of its competition from Silicon Valley, Barra was asked about two of the region's biggest names – Apple's Tim Cook and Tesla boss Elon Musk. "I have tremendous respect for Tim Cook, and I don't really think he needs advice from me," Barra told USA Today with a laugh. And when asked about Apple's future as a "viable competitor," she said, "I have no insights other than what I read in the papers. But it would be foolish for me not to assume that they're going to." As for Mr. Musk's openness about future products and how it contrasts with GM's relatively closed attitude, Barra also gave a chuckle. "I'm sure you would like me to say yes. I think we're fundamentally different. Look at our volume and look at the segments where we compete. His product line – his two products – his scale, it's completely different." The rest of Barra's interview is certainly worth a read, and includes talk about the Volkswagen diesel scandal, GM's changed relationship with the National Highway Traffic Safety Administration, and Uber. Head over to The Detroit Free Press website for the full story from USA Today.

2020 Cadillac CT4 First Drive | Small shoes to fill

Following an existential crisis of fits, starts, headquarters moves and executive shakeups, Cadillac has itself a new luxury sedan, the CT4. It’s a convincing driverÂ’s car, less convincing as a luxury car, and seems a long shot to lure BMW, Audi or Mercedes owners into the Cadillac fold. For all the changes at Cadillac, that sure sounds familiar. The 2020 Cadillac CT4 is a redesigned ATS by another, equally unmemorable name. That includes an updated rear-drive chassis with eager, enthusiast-friendly tuning and 50/50 weight distribution – always among the ATSÂ’ top selling points. Styling is another winner, with crisp sheetmetal and CadillacÂ’s distinctive lighting signatures helping to differentiate this Yank from the international crowd. Cadillac is stretching so hard to cherry-pick the CT4Â’s competitors, it's possible they might slip a disc. We all remember the ATS as an able, rear-driven rival to the compact BMW 3 Series, Mercedes C-Class et al. But to paint the CT4 in a more competitive light – even as this sedan grows nearly 5 inches in length versus the ATS – Cadillac suddenly claims that its entry-level model, regardless of what it's now called, competes against subcompact, front-drive-based models like the BMW 2 Series Gran Coupe, Mercedes CLA-Class and Audi A3. Unfurling a tape measure reveals the truth: At a bit over 187 inches, the CT4 is actually longer than a 3 Series, C-Class, Audi A4 and every other major compact player. ItÂ’s a foot longer than an Audi A3. So, it's not a subcompact sedan, but there is one area where the CT4 does align with them – just not in a good way. The back seat is scrawny and hard-to-access, the result of its rear-wheel-drive platform and the sort of inefficient packaging that plagued the ATS. As such, it's better to think of the CT4, like the Genesis G70, as an affordable alternative to the roomier 3 Series, and other German compacts. And thereÂ’s nothing wrong with that. It starts at $33,990, undercutting the Germans by many thousands, and still boasts CadillacÂ’s greatest competitive strength: Smartly engineered ride-and-handling that matches up against the Euros with no excuses required. I drove the evident smart play in the CT4 lineup, the Premium Luxury 2.7 model, priced from $40,990, or $42,990 for the all-wheel-drive version I tested. (A Premium Luxury with the 237-horsepower 2.0T starts from $38,490, or $41,690 with AWD).