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GM removes start/stop from full-size trucks and SUVs with V8 engines

GM is removing start/stop technology from a number of its popular full-size SUVs due to the ongoing chip shortage. This follows the removal of cylinder deactivation technology from some of its trucks, which was also due to the chip shortage. GM Authority first reported the news, but we’ve just confirmed everything with a GM spokesperson.  The following 2021 model year vehicles will be affected: Chevy Tahoe, Chevy Suburban, GMC Yukon, Cadillac Escalade, Chevrolet Silverado 1500 and GMC Sierra 1500. Only versions of those vehicles built with the 5.3-liter V8 or 6.2-liter V8 and mated to the 10-speed automatic will have the tech removed from them. Only vehicles manufactured on or after June 7 will be affected. “By taking this measure, it will enable us to continue production of our high-demand full-size SUV and pickups as the industry continues to rebound and strengthen,” GM said in a statement. Those who ultimately buy one of these vehicles without start/stop technology will receive a $50 discount off MSRP for their troubles. Losing this fuel-saving tech could be a big negative for some, but we know many folks turn it off anyway. Not having to press the button to deactivate start/stop every time could actually be a positive if youÂ’re part of the camp who does that already. 2021 Cadillac Escalade Sport Platinum View 27 Photos On the downside, GM says “most of the affected vehicles will experience a minor reduction in fuel economy.” We donÂ’t have revised window stickers in hand to know how each model will be affected, but any 1 mpg reduction will be rather impactful for vehicles rated as low as these trucks already are. Any reduction will be seen in the city mpg rating, so take the kind of driving youÂ’re going to be doing into account before purchasing. When it comes to greenhouse gas compliance rules, GM says it doesnÂ’t foresee this impacting the companyÂ’s average fleet score. It also intends to begin adding start/stop back to these models as soon as possible, but there will be no retrofit effort made to fit the tech to vehicles already built without it. “Our supply chain organization continues to make strides working with our supply base to mitigate the near-term impacts of the semiconductor situation,” GMÂ’s statement reads. “GM continues to leverage every available semiconductor to build and ship our most popular and in-demand products, including our highly profitable full-size trucks and SUVs for our customers.

2022 Cadillac CT5-V Blackwing will get carbon fiber seat backs

Cadillac is putting the finishing touches on the 2022 CT5-V Blackwing, the high-performance sedan that will pick up where the CTS-V left off. It announced the model will be available with carbon fiber front seat backs. Presumably found on the list of extra-cost options, the weight-saving carbon fiber seat backs will stand out with a book-matched design and a laser-etched V-Series logo that will remind the passengers sitting in the back that they're not riding in a regular CT5-V. Interestingly, Cadillac noted the seats will also boast "other customer-centric innovations and features" that will be detailed closer to the sedan's on-sale date. Chairs are hardly on the front lines of automotive innovation, so we're looking forward to learning more about what Cadillac has in store. Drivers will have carbon fiber in front of them, too, because the multi-function steering wheel's bottom spokes will be made with the composite material. Cadillac hinted the sedan's top speed will lie in the vicinity of 200 mph. 2021 Cadillac CT5-V Blackwing spied View 15 Photos Nearly everything else we know about the CT5-V Blackwing comes from a diverse selection of rumors, industry murmurings, and spy shots. We learned earlier in 2020 that it might receive an updated version of the 6.2-liter V8 that powered its predecessor, not the 4.2-liter Blackwing engine it's named after, and leaked images strongly suggest a manual transmission will be available, though we assume Cadillac will also offer an automatic. It might be a six-speed stick, or Cadillac could use a version of the Chevrolet Corvette's seven-speed manual. Our questions will be answered when the 2022 Cadillac CT5-V Blackwing finally makes its debut. It's scheduled to go on sale in the summer of 2021, so its unveiling is likely a couple of weeks away, and Cadillac warned availability will be limited. The smaller CT4 which replaced the ATS, is also in line to get the Blackwing treatment.

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.