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GM faces possible class action lawsuit over 8-speed transmission

General Motors has been hit with a class-action lawsuit from owners who allege the eight-speed automatic transmission found in several rear-wheel-drive Chevrolet, Cadillac and GMC models between the 2015 and 2019 model years has a defect that causes the vehicles to hesitate and jerk when accelerating or slowing down. The lawsuit was posted to ClassAction.org and spotted by GM Authority. Problems with GM's Hydra-Matic 8L90 and 8L45 transmissions have been well-documented on Internet forums and via complaints filed with the National Highway Traffic Safety Administration, with many reporting damage to their vehicles. The lawsuit was first filed in December in U.S. District Court for the Southern District of Florida but appears to have been transferred recently to New York. Autoblog sought comment from Theodore Leopold, the lead attorney for the plaintiffs. "These transmissions have a common defect," the complaint reads. "Drivers attempting to accelerate or decelerate their cars feel a hesitation, followed by a significant shake, shudder, jerk, clunk, or 'hard shift' when the vehicle's automatic transmission changes gears." The problem also occurs when the vehicles accelerate in a single gear, without shifting, the plaintiffs allege. "Drivers have reported that the shift is sometimes so violent, they feel as though they have been hit by another vehicle." The problem is believed to center on the transmission, torque converter or both. The complaint says it causes undue friction, causing hydraulic systems and gears to function improperly and sometimes leaves metal shavings throughout the transmission, leading to costly repairs and replacement of parts or the entire transmission. It says GM has known about the problems since shortly after it introduced the transmissions, and has issued 13 technical service bulletins, none of which have resolved the problem. GM declined to comment on the lawsuit. The plaintiffs say GM should have warned consumers about the issues and covered repairs under each vehicle's three-year/36,000-mile bumper-to-bumper warranty. They're seeking statewide classes in at least six states: California, Florida, Illinois, New York, Oklahoma and Texas.

Porsche and Buick earn top honors in J.D. Power Sales Satisfaction Index Study

Customer satisfaction with car buying has been at a low point over the past few years, as price increases, inventory shortages, and COVID restrictions have complicated every part of the process. There are signs of improvement, however, as J.D. Power’s 2023 U.S. Sales Satisfaction Index Study showed that customer satisfaction has improved slightly from a year ago. J.D. Power rates satisfaction on a 1,000-point scale, finding that it improved seven points to 793 from last year. Improving inventory levels and a slow leveling off of prices have contributed to that improvement, and fewer people are paying above MSRP for new cars. Some auto brands performed better than others with sales satisfaction. Porsche ranked highest among premium brands, followed by Alfa Romeo. Buick took the top spot among mass-market brands, with GMC, Chevrolet, and Mitsubishi behind. J.D. Power also handed out segment-level awards: Premium Cars: Porsche Premium SUV: Porsche Mass-Market Car: Chevrolet Mass-Market SUV/Minivan: GMC Mass-Market Truck: GMC Despite the increase in sales satisfaction, thereÂ’s still room for improvement to reach pre-pandemic levels. J.D. Power noted gaps in salesperson knowledge as an area of improvement. Buyers rated salespeople much better during a gas vehicle purchase than with EVs, citing their expertise as a challenge. Pricing remains a challenge despite an improvement since 2022, and satisfaction is still below pre-pandemic levels. Mass-market buyers reported a slight bump in satisfaction, while premium buyers felt that pricing was less fair than a year before. ItÂ’s an interesting contrast, showing that dealer pricing tactics can significantly impact satisfaction with the sales process. Fewer people may be paying more than MSRP, but several premium models still list with significant markups. Even more interesting is PorscheÂ’s top spot on the satisfaction list, as its cars often sell with huge upcharges, and itÂ’s exceedingly tricky even to get a build allocation for some models. Buick Chevrolet GMC Porsche Car Buying Ownership

This map reveals the cleanest vehicles based on location

Naysayers love to point out how dirty the electricity grid mix is when it comes to charging electric vehicles. Curmudgeons are eager to jump into any conversation about EVs to enlighten the lucky listeners about how plug-in cars contribute to pollution, sometimes even throwing in a dash of climate-change denial for good measure. (Thanks, buddy. Pray, tell me more about the plight of oppressed SUV owners.) Unless someone buys an EV just because they think they're cool (which, yeah, they often are), they probably have at least a passable understanding of their environmental pros and cons. As many EV owners are already aware, location has a lot to do with any particular plug-in car's carbon footprint. Still, there's always more to know, and knowledge is not a bad thing, especially if one uses it to do the right thing. That's why this handy-dandy map from Carnegie Mellon University is so interesting. CMU researchers have compiled information about the lifecycle greenhouse gas emissions of various EVs based on where they're charged, as compared to gasoline-powered vehicles. The researchers looked at the Nissan Leaf, Chevrolet Volt, and Prius Plug-In Hybrid versus the gasoline-dependent Toyota Prius hybrid and the stop-start-equipped Mazda3 with i-ELOOP and compared grams of CO2 emitted per mile. CMU takes into account the grid mix, ambient temperature, and driving patterns. CMU takes into account the grid mix based on county, as well as ambient temperature and driving patterns in terms of miles traveled on the highway or in the city. For instance, if you drive a Nissan Leaf in urban areas of California, Texas, or Florida, your carbon footprint is lower than it would be if you were driving a standard Toyota Prius. However, if you charge your Leaf in the Midwest or the South, for the most part, you've got a larger carbon footprint than the Prius. If you live in the rural Midwest, you'd probably even be better off driving a Mazda3. Throughout the country, the Chevrolet Volt has a larger carbon footprint than the Toyota Prius, but a smaller one than the Mazda3 in a lot of urban counties in the US. The Prius and Prius Plug-In are relatively equal across the US. Having trouble keeping it straight? That's not surprising. The comparisons between plug-in and gasoline vehicles are much more nuanced than the loudest voices usually let on.