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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.

2022 GMC Sierra 1500 Denali gets Super Cruise and an upgraded interior

The 2022 GMC Sierra 1500 is getting Super Cruise! Exclamation point required, because this is exciting news. Cadillac has been the sole owner of Super Cruise at GM from the start, and though we knew it was coming to the Hummer EV, we didn't know a fast-selling full-size pickup would be getting the technology. GMC says it will launch Super Cruise on the 1500 Denali, which is the most expensive and luxurious trim of the Sierra. It’s scheduled to arrive for the 2022 model year, but GMC qualifies that by saying “late model year 2022.” That means itÂ’s probably coming right toward the end, with 2023 scheduled as the first full year of Super Cruise in the Sierra 1500. GM also claims that the version of Super Cruise coming to the Sierra is capable of towing. Yes, hands-free towing, folks. WeÂ’re a little antsy, too. The tech is the same as the newest generation of Super Cruise coming in the Cadillac CT5 and CT4. ItÂ’s an improved version with more capability than the first-gen system that won AutoblogÂ’s Technology of the Year award a couple of years ago. Questions still remain to be answered, though. GM hasnÂ’t said anything about what it will cost on the Sierra 1500. WeÂ’re also left in the dark when it comes to other Sierra 1500 trim levels; and what about the Silverado 1500? It makes sense that GM would give the Sierra Super Cruise first, but itÂ’s certainly compatible with the Chevy version of the truck now, too. As for other GMC products, GM is quiet on when theyÂ’ll be blessed with Super Cruise. The redesigned Yukon would be the most obvious candidate being the flagship product, but GM says the program timing worked out best to launch on the 2022 Sierra, not the Yukon. ItÂ’s likely that the SUV will be updated with the system in the near future. Besides Super Cruise, GMCÂ’s photo also reveals that the 2022 Sierra is getting a fully digital instrument cluster. ItÂ’s surely an optional item, but could very well be standard on Denali. GM has flipped the speedometer and tachometer to opposite sides, but their digital versions still have that straight-edged GMC look to them. You can see the Super Cruise graphic in the center, and all the gauges are dropped down to the bottom of the display. But wait, thereÂ’s more. The photo also shows the beginnings of a totally new interior design, different from both the current Sierra, standard Yukon and Yukon Denali interiors. ItÂ’s immediately and obviously different everywhere we look.

GMC Acadia goes big again? Spy photos show next-gen prototype

GMC is testing what looks a lot like a new full-size SUV, signaling the likelihood that it will return to full-size segment after the current generation has run its course. GM downsized the Acadia for the 2017 redesign, carving nearly 10 inches off its length and 3 inches from its girth. For the next generation, it appears that script will be aggressively flipped.  The hierarchy of GM's unibody family SUVs was already a bit wonky before the Acadia's 2017 redesign, and continues to be now. While it would be logical for the Chevrolet Traverse, GMC Acadia, Buick Enclave and Cadillac XT6 — all three-row crossovers — to be different skins on the same fundamental chassis, that's not actually the case. The Acadia is a full foot shorter than either the Traverse or Enclave, with the XT6 falling in between. Based on these photos, that will no longer be the case when the new GMC Acadia debuts. Since the current one went on sale in 2016 as a 2017 model, it's about due for a replacement.  We can't see much beyond basic proportions here, but those tell a clear story. It's pretty obvious that the hood on the prototype is wider and sits higher than on the current car, with perhaps less slope to the now-wider nose. We can also see the faintest impressions of creasing on the flanks, likely leading to the same broad, angular hip treatment present on the current car. Viewed side-by-side, we can see a little more front and rear overhang. There's no obvious hint of substantially longer wheelbase here (the rear doors line up almost perfectly), so we're probably looking at something that is wider but not necessarily much longer.  In any event, we shouldn't have to wait too long to find out exactly what GM has in store for its "Pro" brand.  Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.