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GM recalls 740,000 vehicles over daytime running light issue

General Motors is recalling over 740,000 vehicles due to a daytime running light issue that causes all of the affected cars to run afoul of Federal Motor Vehicle Safety Standards. Vehicles affected by this recall are spread across many of GM’s brands. Models include the 2020-2023 Cadillac CT4 and CT5, 2021-2023 Buick Envision, 2022-2023 Cadillac Escalade and Escalade ESV, 2022-2023 Chevrolet Silverado 1500, Suburban, Tahoe and 2022-2023 GMC Sierra 1500, Yukon, and Yukon XL. GM says that the daytime running lights may remain on in these cars when the headlights are activated. This is a problem, because FMVSS rules require that the daytime running lights deactivate once the headlights turn on. If the DRLs remain on, GM says that could result in additional glare, thereby increasing the risk of an accident. The cause of this failure to deactivate the DRLs comes from body control module software that “under a combination of certain pre-conditions, could fail to deactivate the DRLs,” according to GM. Other GM vehicles were tested, but due to a difference in software or hardware, they remain unaffected. If this is reminding you of another recent GM recall, youÂ’d be right, as GM recalled another 340,000 vehicles for the same issue last month. After that original issue was found within GM, the company began looking into its other cars to determine if the population was larger than originally thought. GM found the additional vehicles included in todayÂ’s recall have the problem. The fix will either be via an over-the-air update or it will require you to bring the vehicle into a dealer for a software update, depending on which vehicle you have. Owner notification letters letting folks know what is necessary are currently scheduled to go out on January 23, 2023. Related video: Cadillac Escalade Infotainment Review

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

2018 Cadillac CT6 Drivers' Notes | Super Cruiser

The 2018 Cadillac CT6 showcases General Motors' impressive Super Cruise feature. It's the next milestone on the way to an autonomous future, though GM is being conservative about promoting Super Cruise's considerable prowess. It helps the driver, GM says. Does it work? Our editors have been testing one this week as the calendar turns and the temperatures drop in Michigan. Also, the CT6 is a really nice car. Here's what we think. Senior Editor, Green, John Beltz Snyder: Super Cruise, man. On Wednesday night, I rode home in a 2018 Cadillac CT6 with Super Cruise. I say "rode," but I was sitting in the driver's seat. I spent more time with my hands off the steering wheel than on it. It was super relaxing. Once I got on the highway, I set the cruise control, waited for the steering wheel icon to show up on the instrument cluster, and hit the button on the steering wheel that looked like a steering wheel (pretty meta, to be honest). The top section of the wheel illuminated in a green arc, and I felt the weight of the steering lift as the car began driving itself. I put my feet flat on the floor, rested my hands on my knees, and just watched the road while listening to a podcast ("The Dollop," if you were wondering). To be honest, I had trouble concentrating on the audio, as my thoughts were captivated by the way the car managed the road and traffic around me. Sure, I had to change lanes on my own and take over steering on interchanges and surface streets, but when the AI took the reins, it had my complete confidence. Perhaps just as surprising, the CT6 was also a blast to drive manually. It felt super smooth, with plenty of power and poise. I enjoyed bending it through 50-mph curves almost as much as I enjoyed being driven. Almost. Editor-in-Chief Greg Migliore: Super Cruise just works. I was blown away how easy it was to use and how well it just did what it was supposed to do. Merging into the teeth of rush hour traffic in metro Detroit, I braced for the worst. I figured I'd be stuck in bumper-to-bumper gridlock and Super Cruise would never get deployed. Frankly, I was cynical Super Cruise would work. But then I was able to hit the 70-mph speed limit and figured, well, let's just see about this thing. Like John, I did the two-steps to set up SC, and boom, it worked. It trailed the cars in front of me at a proper distance. It braked naturally to a stop and then resumed speed. It slowed down when a Jeep Grand Cherokee cut me off.