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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 says safety is a reason it's dropping Apple CarPlay, Android Auto

Update: GM sent us a statement as a follow-up to its original comments seen in this post: "We wanted to reach out to clarify that comments about GM's position on phone projection were misrepresented in previous articles and to reinforce our valued partnerships with Apple and Google and each company’s commitment to driver safety. GM's embedded infotainment strategy is driven by the benefits of having a system that allows for greater integration with the larger GM ecosystem and vehicles." The original story can be read in its entirety below.   General Motors announced its intention to remove Apple CarPlay and Android Auto functionality from its upcoming EVs earlier this year, and internet comments sections haven't been kind since. As the first of many EVs to follow – the 2024 Chevrolet Blazer EV – hits the market, GM is expanding on its initial explanations for dropping the tech. Motor Trend spoke with Tim Babbit, GMÂ’s head of product for infotainment, to learn more. Attributed to Babbit, from the story: “They have stability issues that manifest themselves as bad connections, poor rendering, slow responses, and dropped connections. And when CarPlay and Android Auto have issues, drivers pick up their phones again, taking their eyes off the road and totally defeating the purpose of these phone-mirroring programs. Solving those issues can sometimes be beyond the control of the automaker.” Babbit suggests that a world without Apple CarPlay or Android Auto will be a safer one, as folks wonÂ’t be looking to control their infotainment systems via their phones. However, Babbit also tells MT that this theory hasnÂ’t been tested in either the lab or the real world yet. Instead of using a navigation or music-playing app powered through your phone, upcoming GM EVs will use a Google-based infotainment system called “Ultifi” that runs a ton of integrated Google apps. Google Maps will be the native navigation app in the system; youÂ’ll be able to log in to Spotify or other apps to load your music up, and so on. The idea here is that youÂ’ll have all the same apps that were on your phone available but integrated within the infotainment system instead, and you'll be able to use voice controls to control every last bit of it with no need to reach for a phone. That sounds amenable in theory, but how consumers react to the removal of a feature that they know and love now is a risky gamble.

GM applies for LT5, LTX trademarks... are new small block variants coming?

Recently discovered General Motors trademark applications for LT4, LT5, LT88 and LTX have observers wondering what kind of high-performance offerings could be on their way. A new LT4 would mark a return of the engine designation first used on the Corvette Grand Sport, SLP Pontiac Firehawk and SLP Chevrolet Camaro SS from 1996 and 1997. Supposition at Corvette Forum - which provided advance intel on the C7 like these leaked images - believes a new LT4 could go into the high-performance trim of the next-gen, 2015 Camaro that would be more powerful than the 580-horsepower Camaro ZL1.
Seeing an LT5 again would also be déjà vu - in its former life it was a 5.7-liter V8 for the C4 Corvette ZR-1 from 1990-1994 designed by Lotus, producing from 370 hp to 405 hp. A mix of rumor and hope is that the new LT5 will be a supercharged evolution of the 6.2-liter LT1 (pictured) placed in the new C7 Corvette, and that it will go into the C7 version of the ZR1 pumping out something like 700 hp.
The LTX trademark is, as with that last letter, a complete mystery. If the "X" isn't a generic way to denote the whole LT family, it's wondered if it LTX could refer to a crate motor offering like the LSX.