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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

GM extending warranties on Cadillac CTS-V and Chevy Camaro ZL1 for supercharger issue

Okay General Motors, we've sat by and watched you recall the compact cars, crossovers and pickup trucks, and aside from reporting on it, we've been fairly quiet. This, though, this will not do. We can almost tolerate the recalls on the bread-and-butter cars, but leave the performance vehicles alone.
According to a report from The Car Connection, GM has discovered a problem with the superchargers of the 6.2-liter V8s found in the Chevrolet Camaro ZL1 and the Cadillac CTS-V. Apparently, the issue rests around the internal bearing shaft grease, which can become contaminated (we aren't sure with what). If left unchecked, it'll first lead to a rattle at idle, which goes away under slight throttle. The real warning stage is when a high-pitched squeal develops, signaling that the bearing shaft has failed. Naturally, severe engine damage is the next step (although it's possible that the engine will also just refuse to turnover, although neither case is desirable).
According to TCC, GM will replace the superchargers on vehicles that have exhibited symptoms of bearing shaft failure free of charge. It will also, allegedly, be extending the warranty on all supercharged ZL1s and CTS-Vs to 10 years or 120,000 miles (whichever comes first), from the date of purchase. Officially, only 2009 to 2013 CTS-Vs and 2012 to 2013 ZL1s are suffering from this issue.

Cadillac chief marketer admits ELR is 'a big disappointment'

During the Cadillac XT5 global launch in Dubai, Automobile interviewed Cadillac Chief Marketing Officer Uwe Ellinghaus and got the CMO to touch on just about every major issue affecting the brand and the industry. After two years on the job, having come from 15 years at BMW, Ellinghaus naturally started with the "passionate Cadillac customers" and "iconic brand" spiel, then they got into a top-down look at where America's preeminent luxury brand stands. Ellinghaus said Cadillac is in a period of transition, lately focused on smaller and more performance-oriented vehicles, which has alienated a chunk of veteran customers and left others trying to figure out what Cadillac is about. He believes that "for a few more years, the products will probably be stronger than the brand," while he does his work of conveying what the company has to offer. But the brand had to make the switch, because "Generation X and Y will make 80 percent of all actual buyers in the next five years..." On top of that, he'll be working on making sure the customer and dealership experiences are where they need to be. Speaking of dealers, Ellinghaus thinks the future will not be brick-and-mortar shops, but digital pickup-and-delivery services. "Nobody wants to go to a dealership for service and maintenance," he says. He said the ELR has been "a big disappointment," but it has taught Cadillac that converting its existing line-up to plug-in hybrids is a better way forward. However, he characterized the plug-in hybrid as "the next all-wheel drive," in that everyone's going to offer it soon, so it will be "an entry ticket into luxury automobiles rather than a differentiating aspect." The CMO thinks the CTS is suffering because of the decline in the US midsize luxury sedan market in general thanks to the SUV and crossover craze, so the brand really needs another small SUV. Head over to Automobile for more of Ellinghaus' intriguing answers, like "I do believe that very long-term hydrogen is really the way," and "it's time to get real" in Europe. Taking a dig at Volkswagen on that last matter, he also said, "I think the absence of the diesel is not as much of an issue as it was eight weeks ago." Related Video: