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GM recalls select Tahoes, Yukons, Escalades for rear driveshaft issue

GM is recalling a number of its full-size SUVs due to an issue with the rear driveshaft assembly that could ultimately result in driveshaft failure. The actual number of total vehicles involved in the recall is small at just 1,789, but it’s spread out across the entire 2021 model year full-size GM vehicle lineup. That means a small number of every model is being recalled, including the Chevrolet Tahoe, Suburban, GMC Yukon, Yukon XL and the Cadillac Escalade and Escalade ESV. GM traced the issue back to certain driveshaft assemblies with ball bearings that were not properly heat treated. If theyÂ’re not properly heat treated, GM says that the balls may deform over time, causing noise and vibration. Continue to drive in this condition, and GM says the affected joint in the driveshaft assembly could seize, causing loss of drive power. However, the problem wonÂ’t present itself all at once, as GM says there will be a gradual increase of noises and vibrations before total failure. For those few owners with affected vehicles, GM says that it will replace the left and right rear driveshaft assemblies with properly-built units. Per usual with recalls, this will be done at your local dealership at no cost to the owner. If you have one of the recalled SUVs, expect to be notified mid-March. Related video:

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:

GM Ultra Cruise hands-free system will take on Tesla Full Self-Driving

GM announced Wednesday that it will introduce a new semi-self-driving suite above its Super Cruise offering. Dubbed Ultra Cruise, it will coexist with GM's existing tech as it goes toe-to-toe with Tesla's "Full Self-Driving." GM says it will be compatible with more than 2 million miles of U.S. and Canadian roadways (with lots of headroom for expansion) and operate in more than 95% of normal driving situations at launch. The system will utilize more sensors than the existing Super Cruise system, with "cameras, radars and lidar, developing accurate, 360-degree, three-dimensional statistical representations of the environment surrounding vehicles with redundancies in critical areas." Tesla has long eschewed lidar technology as a means to improve its Autopilot and Full Self-Driving suites, but may be coming around on it. And Tesla recently dropped radar on Model 3 and Model Y to rely on cameras. While there are many competent semi-self-driving systems on the market today, true autonomous vehicles are still in their earliest stages, with Google's Waymo generally considered the leader of the race. Early releases of Tesla's many-times-delayed Full Self-Driving suite have demonstrated just how infantile the technology is, and even it is leaps and bounds ahead of other commercially available technology – and with good reason.    Related: GM sets goals of doubling revenue, leading U.S. electric vehicle sales   Semi-self-driving suites offered in typical mainstream cars are effective upgrades to adaptive cruise control, but even the ability to go for hours on the highway with limited input is nothing compared to the demands placed on a true self-driving platform. Things we take for granted in everyday driving — reacting to traffic lights and signs, changing lanes, navigating turn lanes and safely pulling into traffic, driving close to obstacles such as construction barricades, or something as simple as properly negotiating a tight driveway — are beyond the scope of all other advanced driver assistance suites.  "Ultra Cruise is not just a game changer in terms of what it enables ­– a door-to-door hands-free driving experience – but a technological one as well," said Doug Parks, GM executive vice president of Global Product Development, Purchasing and Supply Chain. "It's been developed completely in-house.