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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.

Stop-start standard in four-cylinder 2015 Chevrolet Impala

Chevrolet has announced that it will include stop-start technology as standard in the entry level 2015 Impala. The result is a nearly five-percent improvement in city fuel economy, also known as one mile per gallon, up to 25 mpg, combined. The 3.6-liter V-6 Impala will not feature stop-start. The 2015 Impala comes equipped with Chevrolet's 2.5-liter Ecotec four-cylinder engine, which will also offer 22 mpg in the city, and 31 on the highway. The 3.6-liter V-6 Impala will not feature stop-start and the mild-hybrid eAssist model from the 2014 MY, which got 29/25/35 combined/city/highway mpg, has been discontinued. Chevrolet spokesman Chad Lyons told Green Car Reports that not even one percent of the 2014 Impalas purchased were the Eco model. So Chevy is trying something different. With a seamless driving experience in mind, the new Impala's stop-start tech features software that governs under what conditions the feature will activate. The engine won't shut off if the car has not reached a speed of six miles per hour, so the start-stop won't be cycling during traffic jams. It can also fire the starter even if the engine has not come to a full stop, which quickens reaction time, particularly in instances of what Chevrolet calls "change-of-mind events." The stop-start function uses information about cabin temperature and humidity as well as battery charge to help determine whether or not to shut off the engine. The 2015 Impala has been engineered to reduce NVH, which will also help create a smoother stop-start experience for occupants, Chevy says. Motor mounts have been updated, and a burlier starter motor will help restart the engine after a stop. The Impala follows the 2014 Malibu as Chevrolet's second vehicle to feature stop-start tech. The four-cylinder model currently makes up over 30 percent of Impala sales. The 2015 Impala will be available beginning this summer, with a base MSRP of $27,735 (including destination charges). And while one MPG isn't a huge difference, neither is the price increase of just $50 for a bit of eco-minded innovation. Read on for more details in the press release below. Chevrolet Makes Stop/Start Standard in 2015 Impala Technology improves city fuel economy by 5 percent 2014-05-22 DETROIT – Stop/start technology will be standard on the 2015 Impala base 2.5-liter ECOTEC® engine, an addition that improves the vehicle's city fuel economy by nearly 5 percent, or one mile per gallon.

GM plans to sell the Chevy Tahoe and Cadillac Escalade in China

General Motors Co plans to sell full-size sport-utility vehicle (SUV) models in China for the first time, and will import a range of models to beef up its product lineup into the world's biggest car market, its China chief told Reuters. The plan would mark a change of tack for GM, which currently produces all of the vehicles it sells in China within the country, which is set to be the only major economy to grow this year amid the COVID-19 pandemic. GM, China's second-biggest foreign automaker, is aiming to offer four models as it looks to improve its brand image and support a sales recovery: Chevrolet's Tahoe and Suburban, Cadillac's Escalade and the GMC Yukon Denali. The Detroit-based company is showcasing those models at the China International Import Expo, or CIIE, an annual import show in Shanghai which started on Wednesday and runs into next week. "Our intention is to get customer reaction and find a way to sell these cars in China," said GM's China chief Julian Blissett. The automaker sees opportunities for such vehicles, partly because Chinese families are expanding, he added. "We are looking into a variety of market sales plans for these vehicles, including online sales, leasing and others," he said, declining to give a detailed timeframe for the plan. GM's Buick and Cadillac mid-size SUVs helped the group's Chinese sales grow 12% in the third quarter this year, the first quarterly growth in the past two years. But it does not have full-size SUV models, which usually have a third row of seats and has room for six or seven people. BATTLEGROUND China, where over 25 million vehicles were sold last year, is a crucial battleground for global automakers including Volkswagen AG, the biggest foreign player by sales volumes, GM and Toyota, as well as local leaders Geely and Great Wall. The country has seen auto sales pick up in recent months following a COVID-19-induced slump, and authorities say they have largely brought the epidemic under control following its emergence in the central city of Wuhan at the end of last year. The expansion plan would also mark GM's first official sales in China of GMC vehicles, a premium brand in the group. Previously GMC vehicles were only sold in the country via unofficial grey importers. The imports will, however, not change GM's basic production strategy in China. It will still mostly sell vehicles made in China - for now, at least. "Depending on however we go we might make other decisions," Blissett said.